QUESTION 1 1 points A reaction has a AG of -5.6 kcal/mol. Which of the ollowing

Question

QUESTION 1 1 points A reaction has a AG of -5.6 kcal/mol. Which of the ollowing would most likely be true? The reaction could be coupled to power an endergonic reaction with a G of +8.8 kcal/mol. The reaction would result in a decrease in entropy (S) and an increase in the energy content (H) of the system. The reaction would result in an increase in entropy (S) and a decrease in the energy content (H) of the system. The reaction would result in products with a greater free-energy content than in the initial reactants. Click Save and Submit to save and submit. Click Save All Ansuwers to save all a answers

Explanation / Answer

1. Option C is correct.

dG = negative. So, energy is released into the system leading to increased entropy.

2. Option C is correct.

Breaking the terminal phosphoanhydride bond in ATP molecule releases 7.3 kcal/mol of energy. Increase in entropy also contributes to it.

3. Option C is correct.

The energy status of a reactant or a product does not change whether they take part in an uncatalyzed or enzyme-catalyzed reaction. It is the absolute energy present in them. So, the difference in energy levels between substrates and products would be same in both catalyzed and uncatalyzed reactions.

4. Option A is correct.

The combustion reaction has negative dG for glucose. However glc doe not undergo spontaneous combustion at room temperature. This is because glc molecules lack activation energy to enter the combustion reaction at room temperature.

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