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8SO2+16H2S ---> 3S8+16H2O
64*8 16*34 3*8*32 16*18
512 544 768 288
544>512, it needs more H2S than SO2 in the reaction, so the amount of products should be calculated by using H2S
768/544 = x/93
x = 768/544*93
=131.3 g
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unit 3 health activity
Comparing Media MessagesGo online and find an example of a commercial for a product that is not healthy, such as fast food ...
unit 3 health activity
Comparing Media MessagesGo online and find an example of a commercial for a product that is not healthy, such as fast food or an alcoholic beverage. Analyze the message of the advertisement. To do so, address the following questions:What kinds of things is the product being associated with in the advertisement?How do the people in the advertisement appear?What are the physical qualities of the individuals in the advertisement?Are there any indications of the health risks associated with the product?Sum up the message of the images in one or two sentences.Does thinking about these elements change how you see the advertisement? Explain your answer.Answer each question in complete sentences. When you have completed this part of the exercise, find a public service announcement (PSA) that deals with a health-related topic. Address the following questions:What behavior is encouraged or discouraged by the PSA?What kinds of images is the PSA using to get this message across?What are the physical qualities of the individuals in the PSA?Sum up the message of the PSA in one or two sentences.When you have answered these questions in complete sentences, write a brief paragraph explaining what the advertisement and the PSA have in common and how they differ. Explain how analyzing messages can help consumers make good choices about health. Be sure to include a link to the advertisement and to the PSA with your assignment.
SIMPATH 421 American Sentinel Aurora Financial Considerations Change Project
Activity 5Financial Considerations Discuss the financial considerations, limitations, benefits associated with the develop ...
SIMPATH 421 American Sentinel Aurora Financial Considerations Change Project
Activity 5Financial Considerations Discuss the financial considerations, limitations, benefits associated with the development of the change project.Reading and ResourcesRead Chapter 10 in Marquis, B.L. & Huston, C.J. (2017). Leadership roles and management functions in nursing: Theory and application (9th ed.). Philadelphia, PA: Lippincott, Williams & Wilkins. Additional Instructions:All submissions should have a title page and reference page.Utilize a minimum of two scholarly resources.Adhere to grammar, spelling and punctuation criteria.Adhere to APA compliance guidelines.Adhere to the chosen Submission Option for Delivery of Activity guidelines.Submission Options:Choose One:Instructions:Paper2 to 3-page paper. Include title and reference pages.Microsoft PowerPoint Presentation4 to 8 slides. Add title and reference slides.Follow Rules of 7.Other media (Prezi, etc.) presentation4 to 8 slides with speaker notes. Add title and reference slides.Follow Rules of 7.Video Presentation5 to 6-minute video presentation.Attach reference page or include in video.Professional appearance and background.Video submissions must include a script in Word format, submitted through Turnitin for an Originality Report.TableTable with appropriate columns and headers.Include title and reference pages.Graphs or other illustrationsGraphs or illustrations with appropriate labels. Include title and reference pages.PosterPoster utilizing any applicable poster template. Include visual graphics/images/other formats for visual appeal. Include appropriate title and references on poster.Note: Title and reference pages/slides do not count towards the count requirements.Organizational and Systems Leadership: Financial Considerations
Description: The baccalaureate graduate will provide oversight and accountability in a variety
of settings.
Course Competency: 6) Examine the variables that impact allocation of resources.
QSEN Competencies: 2) Teamwork and Collaboration 4) Quality Improvement
BSN Essential II
Component Gold
Mastery
Silver
Proficient
Bronze
Acceptable
Acceptable
Mastery not
Demonstrated
Explain the
financial
considerations,
limitations and
benefits associated
with the change
project
Explains the
financial
considerations,
limitations and
benefits associated
with the change
project
Discusses the
financial
considerations,
limitations and
benefits associated
with the change
project but not indepth or content is
missing
Lists the financial
considerations,
limitations and
benefits associated
with the change
project
Does not address
section
Develop a
potential budget
for the change
project, identify
where resources
would be allocated
from and where
cost savings would
be utilized
Develops a
potential budget
for the change
project, identify
where resources
would be allocated
from and where
cost savings would
be utilized
Develops a budget
for the change
project, does not
provide one of the
following, where
the resources
would be allocated
from or where the
cost savings would
be utilized
Develops a basic
budget with
missing
information and
does not provide
where resources
would be allocated
from or where the
cost savings would
be utilized.
Does not address section APA, Grammar,
Spelling, and
Punctuation
No errors in APA,
Spelling, and
Punctuation.
One to three errors
in APA, Spelling,
and Punctuation.
Four to six errors
in APA, Spelling,
and Punctuation.
Seven or more
errors in APA,
Spelling, and
Punctuation.
References Provides two or
more references.
Provides two
references.
Provides one
references.
Provides no
references.
SCI 203 Colorado Technical University Energy Sources Lap Report
this link has the answers.https://class.ctuonline.edu/_layouts/MUSEViewer/Asset.aspx?MID=17341150&aid=17341151I uploded a ...
SCI 203 Colorado Technical University Energy Sources Lap Report
this link has the answers.https://class.ctuonline.edu/_layouts/MUSEViewer/Asset.aspx?MID=17341150&aid=17341151I uploded a word doc which has a chart to be completed form the link. And you will write a one page lap report. Student InstructionsFor each assignment, you will use the M.U.S.E. link to complete the lab.In this lab, you will see the impacts associated with coal-fire or nuclear power plants for electricity generation. This will help you write a scientific paper that focuses on energy sources.Energy SourcesEverything people do in their daily lives involves the consumption of resources. One resource in particular is energy. Electricity is one of the most important energy resources consumed. Electricity is also one of the highest in demand. Traditionally, fossil fuels have dominated the U.S. energy mix. Examples of fossil fuels include:CoalNatural gasOilHowever, it is well-known that fossil fuels emit carbon into the environment. This is harmful to the environment because fossil fuels are contributing to global warming. Fortunately, alternative energy sources are becoming more efficient and popular. Examples of alternative energy sources include:SolarWindHydroGeothermalAnalyze energy sources, to write a scientific paper that addresses:The 2 primary sources of electricity generation are coal and nuclear power plants. Which of these sources is better for human sustainability?Using the M.U.S.E. link, review the background information and gather your data.Review this video for a detailed overview of this assignment: https://breeze.careeredonline.com/pa30gmoj8hh1/?launcher=false&fcsContent=true&pbMode=normal . Then you will use the Lab 4 worksheet for assignment instructions and data collection. Be certain to compete both Part 1 and Part 2 of the worksheet.Please submit your assignment.For assistance with your assignment, please use your text, Web resources, and all course materials.Assignment Specific Grading Criteria:Unit 4 Individual Project Grading CriteriaMax PointsTable in Part 1 is filled out completely using simulated data from MUSE5Purpose describes the overall lab in 2-3 sentences5Introduction is a 1 paragraph about energy usages and the main factors on coal and nuclear energy resources. This may include common perceptions about these resources and environmental concerns. Introduction may also discuss human energy demands. This is not a summary of the actual lab.5Hypothesis is a one sentence prediction that relates directly to the data collected in Part 1.5Methods include a summary of using the simulation to collect data.5Results summarize in sentence form the data contained in Part 1. Table from Part 1 should either be included in this section or referred to.5Discussion is 1 paragraph that explicitly relates data (Table 1) to hypothesis, making connections between human energy usages, long-term sustainability, and the two energy resources compared in the lab.5Uses proper spelling, punctuation, and grammar to write clearly and effectively.5Total:40
Biology class
Your original post must be at least 200 words in length. It must reference the text or course learning materials at least ...
Biology class
Your original post must be at least 200 words in length. It must reference the text or course learning materials at least once. Please note that even if the question asks for an opinion, you are still expected to support opinions with references to course materials and any other credible academic sources to support your opinions. Do not use Internet sources other than those provided in the course materials. APA format is not necessary for your Discussion Board when citing references, but you are required to acknowledge your resources: In the narrative, describe where information was obtained. For example, “As mentioned in Chapter 2 of the course textbook, prioritizing tasks is...” or “As mentioned in the intellipath lesson for Unit 2...”Your two response posts must be at least 75 words in length. Responses should contribute to the conversation by being reflective, specific, and engaging. Quick responses (such as “I agree” or “Thank you!”) will not be counted as adequate.Your first contribution must be posted before midnight CST (Central time) on Friday of each week. You must make 2 additional posts—on separate days between Saturday and Tuesday—before midnight CST. The original response and the peer responses can be completed in any order.For assistance in supporting your assignment, please use your text and all course materials.Assignment DetailsPhotosynthesis and ChloroplastsYou will read that only plants, algae, and some bacteria are photosynthetic. There is an exception to this, however. One species of sea slug has found a way to steal chloroplasts, store them in glands lining its digestive tract, and live on the sugar that is produced (Milius, 2010). What if animals and humans could be engineered to have chloroplasts and could then use photosynthesis?Focus your discussion on 1 of the following topics:Describe at least 2 benefits and 2 drawbacks there might be for animal cells (including humans) to make their own food through photosynthesis.Explain which cells, tissues, or organs should be modified to lead to successful photosynthesis in animals. Discuss how this compares to a plant’s leaves.Describe at least 1 requirement for photosynthesis that would need to be considered for chloroplasts to function in an animal or a human.Predict 2 or more consequences of photosynthesis in humans.Recommended: Click on the following links to review materials to enhance your knowledge and assist with your discussion post:Chloroplast-Stealing Sea Slug PhotosynthesisUtilize at least 1 credible source to support the arguments presented in your post.ReferencesFarabee, M. J. (2007). Photosynthesis. Retrieved from https://www2.estrellamountain.edu/faculty/farabee/BIOBK/BioBookPS.htmlMilius, S. (2010, January 11). Green sea slug is part animal, part plant. Wired. Retrieved from http://www.wired.com/wiredscience/2010/01/green-se...
25 question
QUESTION 1Enzymes (Check all that apply.)are inorganic molecules.act as catalysts.have a special shape that controls their ...
25 question
QUESTION 1Enzymes (Check all that apply.)are inorganic molecules.act as catalysts.have a special shape that controls their functionare specific for their substrates.QUESTION 2Enzymes are consumed in chemical reactions and must therefore be replenished True FalseQUESTION 3Which of the following best describe what enzymes are and how they are used? catalytic proteins that are efficient in initiating chemical reactions by lowering the activation energy.catalytic lipids that are efficient in initiating chemical reactions by lowering the activation energy.intermediate carriers of electrons that are required for, or increase the rate of, catalysis.organic substances that increase the activation energy.QUESTION 4Altering the three-dimensional structure of an enzyme might change the amount of energy needed for a reaction.allow the reaction to occur at a faster rate.change the type of substrate that binds the enzyme's active siteprevent the substrate from binding the enzyme's active site.QUESTION 5Imagine that you are observing an enzyme-catalyzed reaction in lab. Every time you add more enzyme, the reaction rate increases proportionally until the reaction rate suddenly levels off. No other chemicals were added, and no modifications were made in the experimental setting. Why do you think the reactionn rate stopped increasing? @ As a reaction rate increases, eventually all available substrate molecules will be bound to enzymes, or all available enzymes will be bound to substrate. The reaction will be substrate-limited or enzyme-limited. When all available molecules of either enzyme or substrate are bound, saturation occurs, and at this point the reaction rate will level off. To keep increasing the reaction rate, the levels of available substrate or enzyme must increase. In the above example, additional enzyme was added, so substrate must have been the limiting factor.The molecules of substrate noncompetitively inhibited the enzyme.The enzymes were denatured.The molecules of substrate were all bound to enzyme.The molecules of product competitively inhibited the substrate.QUESTION 6As the amount of substrate is increased in an enzyme-substrate reaction, the amount of enzyme also increases proportionally.enzymes work faster.the amount of product increases.enzymes become denatured faster.QUESTION 7A given enzyme works on any number of different substratesone of two possible substratesone type of substrate.no substrateQUESTION 8_________ can change the active site of an enzyme and alter its functionconcentration of the substrateonly pHtemperature and pHconcentration of the enzymeQUESTION 9The pH can affect the activity of an enzyme controlled reaction by (Check all that apply) affecting hydrogen bonding.changing the shape of the enzymes active site.altering the allosteric site.changing the ionic state of either the enzyme or the substrate.QUESTION 10The two data curves on the figure illustrate that optimal temperature ranges are not the same for all enzymespH is not related to enzyme efficiencytemperature ranges are not the same for all enzyme activity. temperature is not related to enzyme efficiency. QUESTION 11The active site of an enzyme (Check all that apply) is the part that binds to the substrate.is the part that is permanently altered by the reaction.changes to conform to the substrate.is compatible with many different substrates, depending on the situation.QUESTION 12How does an enzyme work to catalyze a reaction? It supplies the energy to speed up a reaction.lowers the energy barrier needed for reactants to achieve the transition state or lowers the energy of activation of a reaction.It lowers the energy barrier needed for reactants to achieve the transition state.It lowers the energy of activation of a reaction.QUESTION 13The shape of an enzyme determines its function. True FalseQUESTION 14An increase in enzyme or substrate concentration will not change the amount of product producedinterfere with the reaction.increase the amount of reaction.decrease the amount of reaction.QUESTION 15How can you determine the optimum pH of an enzyme? Test the enzyme at different pH levels.Use a pH meter.Test the enzyme in vinegar, orange juice and saliva only.Test the enzyme in distilled water only.QUESTION 16Enzyme activity can be determined in the following ways: by measuring how much of the substrate is consumeddetermining when the amount of substrate is equal to the amount of productby measuring how much of the enzyme is consumedby measuring how much of the product is producedQUESTION 17As the concentration of an enzyme increases for a given substrate, the reaction rate increases similarly.the turnover number decreases at the same rate that the enzyme concentration increases.the rate of the reaction decreases to a pointthe reaction stops.QUESTION 18Enzymes are proteins. nucleic acidslipids. carbohydrates. QUESTION 19Catalase activity can be determined by measuring the formation of oxygen gas.measuring the formation of hydrogen peroxide.measuring the ratio of catalase to oxygen.measuring the amount of catalase remaining in the chemical reaction.QUESTION 20How does the concentration of the substrate in an enzyme-controlled chemical reaction change over time? The substrate concentration will not change.The substrate concentration will decrease at first, then it will increase.The substrate concentration will decrease.The substrate concentration will increase.QUESTION 21Check all of the following statements that are true. The enzyme changes shape to fit the substrate.The enzyme helps to break bonds in the substrateThe enzyme helps to create bonds between two substrates.The substrate changes shape to fit the enzyme.QUESTION 22What may affect the rate of an enzyme-driven reaction? (Check all that apply.)@ Altering any of these variables may make an enzyme function less than optimally.concentration of substratethe air pressurepHtemperatureQUESTION 23In a catalase controlled experiment, the negative control can be shown by catalase onlya mixture of water and catalase.a mixture of hydrogen peroxide and water.a mixture of hydrogen peroxide and catalase.QUESTION 24The primary function of an enzyme or any biological catalyst is to reduce the energy of activation of a reaction.reduced the energy of activation and increase the rate of a reaction.change the direction of a reaction.increase the rate of a reaction.QUESTION 25In a catalase controlled experiment, the specificity of catalase can be shown by comparing a mixture of hydrogen peroxide and catalase.a mixture of water and catalase.a mixture of hydrogen peroxide and water.hydrogen peroxide alone.
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unit 3 health activity
Comparing Media MessagesGo online and find an example of a commercial for a product that is not healthy, such as fast food ...
unit 3 health activity
Comparing Media MessagesGo online and find an example of a commercial for a product that is not healthy, such as fast food or an alcoholic beverage. Analyze the message of the advertisement. To do so, address the following questions:What kinds of things is the product being associated with in the advertisement?How do the people in the advertisement appear?What are the physical qualities of the individuals in the advertisement?Are there any indications of the health risks associated with the product?Sum up the message of the images in one or two sentences.Does thinking about these elements change how you see the advertisement? Explain your answer.Answer each question in complete sentences. When you have completed this part of the exercise, find a public service announcement (PSA) that deals with a health-related topic. Address the following questions:What behavior is encouraged or discouraged by the PSA?What kinds of images is the PSA using to get this message across?What are the physical qualities of the individuals in the PSA?Sum up the message of the PSA in one or two sentences.When you have answered these questions in complete sentences, write a brief paragraph explaining what the advertisement and the PSA have in common and how they differ. Explain how analyzing messages can help consumers make good choices about health. Be sure to include a link to the advertisement and to the PSA with your assignment.
SIMPATH 421 American Sentinel Aurora Financial Considerations Change Project
Activity 5Financial Considerations Discuss the financial considerations, limitations, benefits associated with the develop ...
SIMPATH 421 American Sentinel Aurora Financial Considerations Change Project
Activity 5Financial Considerations Discuss the financial considerations, limitations, benefits associated with the development of the change project.Reading and ResourcesRead Chapter 10 in Marquis, B.L. & Huston, C.J. (2017). Leadership roles and management functions in nursing: Theory and application (9th ed.). Philadelphia, PA: Lippincott, Williams & Wilkins. Additional Instructions:All submissions should have a title page and reference page.Utilize a minimum of two scholarly resources.Adhere to grammar, spelling and punctuation criteria.Adhere to APA compliance guidelines.Adhere to the chosen Submission Option for Delivery of Activity guidelines.Submission Options:Choose One:Instructions:Paper2 to 3-page paper. Include title and reference pages.Microsoft PowerPoint Presentation4 to 8 slides. Add title and reference slides.Follow Rules of 7.Other media (Prezi, etc.) presentation4 to 8 slides with speaker notes. Add title and reference slides.Follow Rules of 7.Video Presentation5 to 6-minute video presentation.Attach reference page or include in video.Professional appearance and background.Video submissions must include a script in Word format, submitted through Turnitin for an Originality Report.TableTable with appropriate columns and headers.Include title and reference pages.Graphs or other illustrationsGraphs or illustrations with appropriate labels. Include title and reference pages.PosterPoster utilizing any applicable poster template. Include visual graphics/images/other formats for visual appeal. Include appropriate title and references on poster.Note: Title and reference pages/slides do not count towards the count requirements.Organizational and Systems Leadership: Financial Considerations
Description: The baccalaureate graduate will provide oversight and accountability in a variety
of settings.
Course Competency: 6) Examine the variables that impact allocation of resources.
QSEN Competencies: 2) Teamwork and Collaboration 4) Quality Improvement
BSN Essential II
Component Gold
Mastery
Silver
Proficient
Bronze
Acceptable
Acceptable
Mastery not
Demonstrated
Explain the
financial
considerations,
limitations and
benefits associated
with the change
project
Explains the
financial
considerations,
limitations and
benefits associated
with the change
project
Discusses the
financial
considerations,
limitations and
benefits associated
with the change
project but not indepth or content is
missing
Lists the financial
considerations,
limitations and
benefits associated
with the change
project
Does not address
section
Develop a
potential budget
for the change
project, identify
where resources
would be allocated
from and where
cost savings would
be utilized
Develops a
potential budget
for the change
project, identify
where resources
would be allocated
from and where
cost savings would
be utilized
Develops a budget
for the change
project, does not
provide one of the
following, where
the resources
would be allocated
from or where the
cost savings would
be utilized
Develops a basic
budget with
missing
information and
does not provide
where resources
would be allocated
from or where the
cost savings would
be utilized.
Does not address section APA, Grammar,
Spelling, and
Punctuation
No errors in APA,
Spelling, and
Punctuation.
One to three errors
in APA, Spelling,
and Punctuation.
Four to six errors
in APA, Spelling,
and Punctuation.
Seven or more
errors in APA,
Spelling, and
Punctuation.
References Provides two or
more references.
Provides two
references.
Provides one
references.
Provides no
references.
SCI 203 Colorado Technical University Energy Sources Lap Report
this link has the answers.https://class.ctuonline.edu/_layouts/MUSEViewer/Asset.aspx?MID=17341150&aid=17341151I uploded a ...
SCI 203 Colorado Technical University Energy Sources Lap Report
this link has the answers.https://class.ctuonline.edu/_layouts/MUSEViewer/Asset.aspx?MID=17341150&aid=17341151I uploded a word doc which has a chart to be completed form the link. And you will write a one page lap report. Student InstructionsFor each assignment, you will use the M.U.S.E. link to complete the lab.In this lab, you will see the impacts associated with coal-fire or nuclear power plants for electricity generation. This will help you write a scientific paper that focuses on energy sources.Energy SourcesEverything people do in their daily lives involves the consumption of resources. One resource in particular is energy. Electricity is one of the most important energy resources consumed. Electricity is also one of the highest in demand. Traditionally, fossil fuels have dominated the U.S. energy mix. Examples of fossil fuels include:CoalNatural gasOilHowever, it is well-known that fossil fuels emit carbon into the environment. This is harmful to the environment because fossil fuels are contributing to global warming. Fortunately, alternative energy sources are becoming more efficient and popular. Examples of alternative energy sources include:SolarWindHydroGeothermalAnalyze energy sources, to write a scientific paper that addresses:The 2 primary sources of electricity generation are coal and nuclear power plants. Which of these sources is better for human sustainability?Using the M.U.S.E. link, review the background information and gather your data.Review this video for a detailed overview of this assignment: https://breeze.careeredonline.com/pa30gmoj8hh1/?launcher=false&fcsContent=true&pbMode=normal . Then you will use the Lab 4 worksheet for assignment instructions and data collection. Be certain to compete both Part 1 and Part 2 of the worksheet.Please submit your assignment.For assistance with your assignment, please use your text, Web resources, and all course materials.Assignment Specific Grading Criteria:Unit 4 Individual Project Grading CriteriaMax PointsTable in Part 1 is filled out completely using simulated data from MUSE5Purpose describes the overall lab in 2-3 sentences5Introduction is a 1 paragraph about energy usages and the main factors on coal and nuclear energy resources. This may include common perceptions about these resources and environmental concerns. Introduction may also discuss human energy demands. This is not a summary of the actual lab.5Hypothesis is a one sentence prediction that relates directly to the data collected in Part 1.5Methods include a summary of using the simulation to collect data.5Results summarize in sentence form the data contained in Part 1. Table from Part 1 should either be included in this section or referred to.5Discussion is 1 paragraph that explicitly relates data (Table 1) to hypothesis, making connections between human energy usages, long-term sustainability, and the two energy resources compared in the lab.5Uses proper spelling, punctuation, and grammar to write clearly and effectively.5Total:40
Biology class
Your original post must be at least 200 words in length. It must reference the text or course learning materials at least ...
Biology class
Your original post must be at least 200 words in length. It must reference the text or course learning materials at least once. Please note that even if the question asks for an opinion, you are still expected to support opinions with references to course materials and any other credible academic sources to support your opinions. Do not use Internet sources other than those provided in the course materials. APA format is not necessary for your Discussion Board when citing references, but you are required to acknowledge your resources: In the narrative, describe where information was obtained. For example, “As mentioned in Chapter 2 of the course textbook, prioritizing tasks is...” or “As mentioned in the intellipath lesson for Unit 2...”Your two response posts must be at least 75 words in length. Responses should contribute to the conversation by being reflective, specific, and engaging. Quick responses (such as “I agree” or “Thank you!”) will not be counted as adequate.Your first contribution must be posted before midnight CST (Central time) on Friday of each week. You must make 2 additional posts—on separate days between Saturday and Tuesday—before midnight CST. The original response and the peer responses can be completed in any order.For assistance in supporting your assignment, please use your text and all course materials.Assignment DetailsPhotosynthesis and ChloroplastsYou will read that only plants, algae, and some bacteria are photosynthetic. There is an exception to this, however. One species of sea slug has found a way to steal chloroplasts, store them in glands lining its digestive tract, and live on the sugar that is produced (Milius, 2010). What if animals and humans could be engineered to have chloroplasts and could then use photosynthesis?Focus your discussion on 1 of the following topics:Describe at least 2 benefits and 2 drawbacks there might be for animal cells (including humans) to make their own food through photosynthesis.Explain which cells, tissues, or organs should be modified to lead to successful photosynthesis in animals. Discuss how this compares to a plant’s leaves.Describe at least 1 requirement for photosynthesis that would need to be considered for chloroplasts to function in an animal or a human.Predict 2 or more consequences of photosynthesis in humans.Recommended: Click on the following links to review materials to enhance your knowledge and assist with your discussion post:Chloroplast-Stealing Sea Slug PhotosynthesisUtilize at least 1 credible source to support the arguments presented in your post.ReferencesFarabee, M. J. (2007). Photosynthesis. Retrieved from https://www2.estrellamountain.edu/faculty/farabee/BIOBK/BioBookPS.htmlMilius, S. (2010, January 11). Green sea slug is part animal, part plant. Wired. Retrieved from http://www.wired.com/wiredscience/2010/01/green-se...
25 question
QUESTION 1Enzymes (Check all that apply.)are inorganic molecules.act as catalysts.have a special shape that controls their ...
25 question
QUESTION 1Enzymes (Check all that apply.)are inorganic molecules.act as catalysts.have a special shape that controls their functionare specific for their substrates.QUESTION 2Enzymes are consumed in chemical reactions and must therefore be replenished True FalseQUESTION 3Which of the following best describe what enzymes are and how they are used? catalytic proteins that are efficient in initiating chemical reactions by lowering the activation energy.catalytic lipids that are efficient in initiating chemical reactions by lowering the activation energy.intermediate carriers of electrons that are required for, or increase the rate of, catalysis.organic substances that increase the activation energy.QUESTION 4Altering the three-dimensional structure of an enzyme might change the amount of energy needed for a reaction.allow the reaction to occur at a faster rate.change the type of substrate that binds the enzyme's active siteprevent the substrate from binding the enzyme's active site.QUESTION 5Imagine that you are observing an enzyme-catalyzed reaction in lab. Every time you add more enzyme, the reaction rate increases proportionally until the reaction rate suddenly levels off. No other chemicals were added, and no modifications were made in the experimental setting. Why do you think the reactionn rate stopped increasing? @ As a reaction rate increases, eventually all available substrate molecules will be bound to enzymes, or all available enzymes will be bound to substrate. The reaction will be substrate-limited or enzyme-limited. When all available molecules of either enzyme or substrate are bound, saturation occurs, and at this point the reaction rate will level off. To keep increasing the reaction rate, the levels of available substrate or enzyme must increase. In the above example, additional enzyme was added, so substrate must have been the limiting factor.The molecules of substrate noncompetitively inhibited the enzyme.The enzymes were denatured.The molecules of substrate were all bound to enzyme.The molecules of product competitively inhibited the substrate.QUESTION 6As the amount of substrate is increased in an enzyme-substrate reaction, the amount of enzyme also increases proportionally.enzymes work faster.the amount of product increases.enzymes become denatured faster.QUESTION 7A given enzyme works on any number of different substratesone of two possible substratesone type of substrate.no substrateQUESTION 8_________ can change the active site of an enzyme and alter its functionconcentration of the substrateonly pHtemperature and pHconcentration of the enzymeQUESTION 9The pH can affect the activity of an enzyme controlled reaction by (Check all that apply) affecting hydrogen bonding.changing the shape of the enzymes active site.altering the allosteric site.changing the ionic state of either the enzyme or the substrate.QUESTION 10The two data curves on the figure illustrate that optimal temperature ranges are not the same for all enzymespH is not related to enzyme efficiencytemperature ranges are not the same for all enzyme activity. temperature is not related to enzyme efficiency. QUESTION 11The active site of an enzyme (Check all that apply) is the part that binds to the substrate.is the part that is permanently altered by the reaction.changes to conform to the substrate.is compatible with many different substrates, depending on the situation.QUESTION 12How does an enzyme work to catalyze a reaction? It supplies the energy to speed up a reaction.lowers the energy barrier needed for reactants to achieve the transition state or lowers the energy of activation of a reaction.It lowers the energy barrier needed for reactants to achieve the transition state.It lowers the energy of activation of a reaction.QUESTION 13The shape of an enzyme determines its function. True FalseQUESTION 14An increase in enzyme or substrate concentration will not change the amount of product producedinterfere with the reaction.increase the amount of reaction.decrease the amount of reaction.QUESTION 15How can you determine the optimum pH of an enzyme? Test the enzyme at different pH levels.Use a pH meter.Test the enzyme in vinegar, orange juice and saliva only.Test the enzyme in distilled water only.QUESTION 16Enzyme activity can be determined in the following ways: by measuring how much of the substrate is consumeddetermining when the amount of substrate is equal to the amount of productby measuring how much of the enzyme is consumedby measuring how much of the product is producedQUESTION 17As the concentration of an enzyme increases for a given substrate, the reaction rate increases similarly.the turnover number decreases at the same rate that the enzyme concentration increases.the rate of the reaction decreases to a pointthe reaction stops.QUESTION 18Enzymes are proteins. nucleic acidslipids. carbohydrates. QUESTION 19Catalase activity can be determined by measuring the formation of oxygen gas.measuring the formation of hydrogen peroxide.measuring the ratio of catalase to oxygen.measuring the amount of catalase remaining in the chemical reaction.QUESTION 20How does the concentration of the substrate in an enzyme-controlled chemical reaction change over time? The substrate concentration will not change.The substrate concentration will decrease at first, then it will increase.The substrate concentration will decrease.The substrate concentration will increase.QUESTION 21Check all of the following statements that are true. The enzyme changes shape to fit the substrate.The enzyme helps to break bonds in the substrateThe enzyme helps to create bonds between two substrates.The substrate changes shape to fit the enzyme.QUESTION 22What may affect the rate of an enzyme-driven reaction? (Check all that apply.)@ Altering any of these variables may make an enzyme function less than optimally.concentration of substratethe air pressurepHtemperatureQUESTION 23In a catalase controlled experiment, the negative control can be shown by catalase onlya mixture of water and catalase.a mixture of hydrogen peroxide and water.a mixture of hydrogen peroxide and catalase.QUESTION 24The primary function of an enzyme or any biological catalyst is to reduce the energy of activation of a reaction.reduced the energy of activation and increase the rate of a reaction.change the direction of a reaction.increase the rate of a reaction.QUESTION 25In a catalase controlled experiment, the specificity of catalase can be shown by comparing a mixture of hydrogen peroxide and catalase.a mixture of water and catalase.a mixture of hydrogen peroxide and water.hydrogen peroxide alone.
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