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SCIH025061: Unit 2 Evaluation
Student ID: C88176220
Student Name: Marin, Pol
Course ID: SCIH025061
Course Name: Biology 1
Evaluation ID: 2
Evaluation Name: Unit 2 Evaluation
Unit 2 Evaluation
Biology 1 (SCIH 025 061)
When you feel you are adequately prepared, complete this Unit
Evaluation. It is important that you do your own work. If you have
difficulty with particular sections, you may use your textbook and course
materials for help in answering the questions. After you have completed
this evaluation, you will submit it for grading.
Select the response that best completes the statement or answers the
1. How many atoms does a molecule of sucrose with the chemical
composition of C12H22O11 have?
12+22+11 = 45
2. If an atom has 7 electrons, how many are located in the second energy
It will have five, because the first level only holds two
3. Atoms of the same element that have different numbers of neutrons
4. Consider this energy diagram for a chemical reaction. Overall, is
energy being released or absorbed?
A. released because the energy level of the reactants is greater than
That of the products
b. absorbed, because the energy level of the products is greater than
that of the reactants
c. released, because the reaction is initiated by the addition of heat
d. absorbed, because the energy level increases during the reaction
5. How does an enzyme influence a biological reaction?
a. It increases the net energy difference between reactants and products.
b. It decreases the activation energy necessary to initiate the chemical
c. It increases the kinetic energy of reactants, thereby increasing their
tendency to collide.
d. It decreases the kinetic energy of reactants, enabling them to undergo
chemical change more easily.
6. Amino acids are the building blocks of which macromolecule?
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