MULTIPLE CHOICE I am double checking my answers to an assignment that I am submi
ID: 176584 • Letter: M
Question
MULTIPLE CHOICE
I am double checking my answers to an assignment that I am submitting and I do not require explanations. Thank you for your help you guys!
10. Which of the following statements about entropy is FALSE?
a. Entropy refers to the second law of thermodynamics.
b. To increase entropy, energy must be used.
c. Organisms eat food to maintain low entropy.
d. Entropy is a measure of disorder.
e. The entropy of the universe is constantly increasing
11. Which of the following factors influence(s) the performance of an enzyme?
a. pH
b. temperature
c. activators
d. inhibitors
e. all of the above
12. How is ATP used in most cell processes?
a. It binds to a substrate and provides energy when the phosphate group is released.
b. indirectly, by providing electrons to an acceptor
c. Hydrolysis of ATP is coupled to an endergonic reaction.
d. It increases the efficiency of some key enzymes.
e. none of the above
13. Enzymes function by
a. lowering the activation energy required.
b. changing the shape of a substrate.
c. bringing reactants together.
d. exposing a substrate to positive or negative charges.
e. all of the above.
14. Which of the following is TRUE about enzymes?
a. They lower the G of a substrate.
b. They usually have a carbohydrate component.
c. They supply free energy to a reaction.
d. They can be affected by temperature.
e. all of the above
Explanation / Answer
10) e
11)e
12)a
13)a
14)a,d,c,
Enzymes lower the activation energy of a reaction. They expedite the reaction by providing free energy to the reaction. They are affected by various parameters like pH, temperature and substrate concentration.
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