Exercise 2: The Tools of Scientific Inquiry NAME_____________________Skill Check Worksheet Lab Section________________ Pre-Lab ActivitiesPart 1: Activity 1: Converting Metric UnitsConvert the following matric quantities:12 kg = ______ g73 L = ______ mL2___ kg = 4,000 g8___L = 6,000 mL35 L = _____ mL9______ g = 8 kg4______ mL = 9 L101.5 kg = ______ g50.5 L = _____ mL1112,000 g = _____ kg6____ kg = 15,000 g121.5 L = ______ mLIn each box, circle the number that represents greatest quantity: 1 kg 100 g 500 g 4 L 3260 mL 800 mL 2700 g 3 kg 3020 g 5200 mL 5 L 5090 mL Use greater than (>), less than (<) or equals (=) to compare the amounts.1.1 L __________ 500 mLa.>b.=c.<2.3 kg _______ 800 ga.>b.=c.<3.5,000 ml ______ 5 La.>b.=c.<4.7 kg _______ 7290 ga.>b.=c.<5.0.5 kg ________280 ga.>b.=c.<Part 1: Activity 2Match each of the items in the following list with its appropriate size in metric units. Since these items are extremely different in size, it is not really necessary to measure them to see the difference. The five items in the left column below are listed in size from smallest to largest. Match each of the items with the correct size from the right column. You may use your lecture textbook or other sources (such as the Internet) to help you correctly determine the sizes._____ Length of a bacterial cell a. 2.5 cm _____Diameter of a typical animal cell b. 600 cm_____Diameter of a human eye c. 2 mm_____ Height of an average human female d. 30 mm_____Length of a human small intestine e. 1.6 mPart 2: Presentation of Data in GraphsPart 2A: The Bar GraphYou can gather a lot of information from a histogram. Answer the following questions based on the histogram in Figure 1. (Prelab 2)One thing that you can determine is the number of times a particular “event” occurred. In this case, an “event” is a sea urchin that was counted. On this graph, what is the total number of events? (i.e. How many sea urchins were counted in total?) You can also use the graph to determine how many times a certain event occurs. In this case, what is the total number of events in the 40-44mm size range? (How many sea urchins are between 40-44 mm in diameter?) What is the range in events? (What is the range in size (the largest and smallest) of the urchins?)What is the title of the graph in Figure 1?What is the label of the x-axis in Figure 1?What is the label of the y-axis in Figure 1?Part 2B: The Line GraphDescribe any trends you see in Figure 2. How long does it take the algae (graphed in Figure 3) to reach its maximum height? Do you see any trend(s) to the data in Figure 3? Is the growth rate of the algae constant at all times? Fill in the following for Figure 3: “The effect of ________________________ on _____________________.” Part 3: What is a mollusc? List three well-known organisms that are molluscs. Describe the characteristics that define the body plan of these organisms. Describe the four substrates where marine mollusks are typically found living. Lab ActivitiesActivity 1. (https://seanet.stanford.edu/Molluscs#brunnea)Table 1: Mollusc Data: Individual Group and Class (10 groups in class)Common NameScientific Name# of specimens (group data)# of specimens(class data)Keyhole limpetFissurella volcano218Black Turban snailChlorostoma funebralis14150Brown Turban SnailChlorostoma brunnea1095PeriwinkleLittorina scutulata19175PeriwinkleLittorina keenae12100Green chitonCyanoplax hartwegii01WhelkAcanthinucella spirata08Brown Top SnailCalliostoma ligatum645WhelkNucella emarginata05WhelkNucella ostrina11Question 1) How many different species of molluscs were present in your group’s collection?Question 2) How did the species you had in your collection compare to species found in collections of the other groups? If there were differences, why do you think that was the case?Question 3) Are there any species that appear to be more highly represented than others? Why do you think that might be the case? Activity 2Table 2: Mollusc length measurements (millimeters) (Black Turban Snail)1523132322292324192416272819162427221830.0241412182630232823232423282224251623183128282223292717182314Question 1) Describe the distribution of sizes of the species of mollusc that you measured. Are all of the sizes evenly distributed? Or are certain sizes more highly represented? Why do you think this might be the case?Activity 3Table 3: Mollusc Length and Weight DataSampleLength (mm)Weight (grams)1141.382161.623181.804222.255232.316242.387252.478272.769292.9110303.221)Look at the trend line and its associated R-squared value. Does there appear to be a linear relationship between length of the shell and weight of the shell? Do you think that weight of the shell would be a good indication of the size of the organism? Based on your data and the R-squared value, why or why not? 2)Besides length and weight, what other characteristics might you be able to use as an indication of the size of the organism? Don’t forget to turn in Activity 5 below. You can add to this document by simply adding it below. Additionally, you can put all of your graphs on a single document and upload it along with this Skill Check Worksheet; it will save a lot of uploads.

The Discussions are not simply statements of opinion. They are intended to allow you to expand upon and apply the principles discussed in your textbook, the lectures, and/or other research you conduct. Each week a question will be posed for your consideration. Before answering, you should review the chapters covered during this week and the lectures.Many of the farm-grown/farm-raised foods available today have been treated with pesticides. Meats, which we eat like beef and chicken, have been irritated. Why are radioactive substances like Cesium 137, Cobalt 60 and Plutonium 238 used to irradiate our food? Some benefits are radiation kills bacteria, the nutrtitional value of the food is preserved and food spoilage is reduced and food shelf life is extended. However there are negative side effects of this technology that everyone must be aware of and understand. For the Week 2’s Discussion we will be talking about Irradiated and Genetically Modified (GM) foods. When discussing this topic in your initial post the following points must be addressed:Irradiated foods1. Discuss a farming practice or treatment practice used to treat crops, crop products, raise animals or treat meats.2. What are some of the reported effects of the treatments on people? [Sources of information must be reliable and credible scientific resources.]3. How are these practices being monitored by the U.S. Federal Government?4. How can the general public research how their food is grown?Your initial post to the discussion is required to be completed and posted by 11:59 p.m. ET Thursday of Week 2. Your initial post is required to be on a specific radiation or genetically modified process that has NOT been posted on by another student AND at least 250 words. This MUST be in your own words. You are required to include at least one credible and reliable scientific resource of information ONLY and research carefully. Do NOT use ANY open blog or ANY open source where anyone can post responses and the information is not verified. Please do not plagiarize. Properly cite information used from outside resources per APA with in-text citations immediately following the information and a full reference citation at the end of discussion post. Review the “Credible References/APA format” folder in the ‘Start Here’ area of the classroom for additional information on Researching Information and properly citing resources used.You are then required to make at least two additional posts to two other students [or one student and the professor] on two separate days and not posted on the same day as your initial post. The response posts should be at least 100 words and be substantive in nature. If a reference is used in writing a response post, it must be an appropriate and reliable academic resource as it is with references used for the initial discussion board response. While pleasantries such as "I agree" or "great job" are nice, they will not count as one of your required posts. A complimentary, philosophical, or off-topic comment does not count as one of the three required entries. For example, it does not help us to tell us that you did not know something before you read an entry. All entries should help everyone understand one or more of the concepts presented.