In a Biochemical Reaction, a  B 

question 97

Multiple Choice

In a biochemical reaction, A  B  C with  30 kJ/mol. Which of the following reactions might be effectively coupled to this reaction so that it becomes more spontaneous?
I.C  D  B  E  40 kJ/mol
II.C  D  B  E  40 kJ/mol

• A)I only
• B)II only
• C)I or II
• D)Neither I nor II can increase spontaneity.
• E)No coupling is required, because the reaction is already spontaneous.

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Definitions:

Auxin

A class of plant hormones that play essential roles in coordinating growth and behavioral processes in the plant's life cycle, including cell elongation and division.

Thigmotropism

Plant growth in response to contact with a solid object, such as the twining of plant tendrils.

Mechanical Stimuli

Physical forces that influence biological processes in organisms, such as pressure, stretch, and flow.

Phototropism

The orientation of a plant or other organism in response to light, typically towards the source of light.