Base Your Answers to the Questions on the Following Information

question 26

Multiple Choice

Base your answers to the questions on the following information:
For a particular cell, the concentration of sucrose is 10 mM on the inside of the cell and 0.5 mM on the outside, whereas the concentration of sodium ions (Na+) is 0.5 mM on the inside of the cell and 10 mM on the outside. The membrane potential is - 150 mV, and the temperature is 25°C.
Constants: R = 1.987 cal/mol degree; T = 25°C = 298 K; F = 23,062 cal/mole volt
-What is the OG' for the inward transport of sucrose?

• A)+1.774 kcal/mol; an endergonic reaction
• B)+1.774 kcal/mol; an exergonic reaction
• C)- 1.774 kcal/mol; an exergonic reaction
• D)- 1.774 kcal/mol; an endergonic reaction
• E)none of the above

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Definitions:

RNA Polymerase

An enzyme responsible for synthesizing RNA from a DNA template, playing a crucial role in the process of transcription.

Tryptophan Operon

A cluster of genes in bacteria that is involved in the production of tryptophan, regulated through feedback inhibition.

Repressor

A protein that binds to specific DNA sequences, preventing or reducing the transcription of certain genes.

Allosteric Site

A region on an enzyme that is distinct from the active site and can bind regulatory molecules to change the enzyme's activity.