Course

Biology Science

Study Pack

Set 8 Energy And Enzymes

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Question 1

(Multiple Choice)

Free
For living organisms, which of the following is an important consequence of the first law of thermodynamics?

A) Organisms grow by converting energy into organic matter.
B) Life does not obey the first law of thermodynamics.
C) The energy content of an organism is constant.
D) The organism ultimately must obtain all of the necessary energy for life from its environment.
E) The entropy of an organism decreases with time as the organism grows in complexity.

Answer

Question 2

(Multiple Choice)

Free
Living organisms increase in complexity as they grow, resulting in a decrease in the entropy of an organism. How does this relate to the second law of thermodynamics?

A) Living organisms do not obey the second law of thermodynamics, which states that entropy must increase with time.
B) Living organisms are able to transform energy into entropy.
C) As a consequence of growing, organisms cause a greater increase in entropy in their environment than the decrease in entropy associated with their growth.
D) Living organisms do not follow the laws of thermodynamics.
E) Living organisms are able to transform entropy into energy.

Answer

Question 3

(Multiple Choice)

Free
Which of the following is true for all exergonic reactions?

A) The reaction goes only in a forward direction: All reactants will be converted to products, but no products will be converted to reactants.
B) A net input of energy from the surroundings is required for the reactions to proceed.
C) The reactions are rapid.
D) The reaction proceeds with a net release of free energy.
E) The products have more total energy than the reactants.

Answer