Question 1

What does it mean if ΔG for a certain reaction is negative?

Accepted Answer

The reaction is exothermic.

Answer

The reaction is in state of equilibrium.

Answer

The reaction consumes energy.

Answer

The reaction is endothermic.

Question 2

Why is ATP considered the energy currency of the cell?

Accepted Answer

It can transport energy to locations within the cell.

Answer

It is a protein.

Answer

It accepts energy from chemical reactions.

Answer

It holds energy at the site of release from substrates.

Question 3

Which of the following best characterizes the reaction represented below?

A + B + energy $\rightarrow$ AB

Accepted Answer

Endergonic reaction

Answer

None of them

Answer

Exergonic reaction

Answer

Oxidation-Reduction reaction

Question 4

Respiration may be represented by the reaction: C₆H₁₂O₆ +6 O₂ → 6 CO₂ + 6 H₂O, ΔG for the overall reaction is 2802.1 kJ/mol. Photosynthesis is the reverse: 6 CO₂ +6 H₂O → C₆H₁₂O₆ + 6 O₂. What is ΔG for the overall reaction of photosynthesis?

Accepted Answer

-2802.1kJ/mol

Answer

-304.7kcal/mol

Answer

304.7kcal/mol

Answer

2802.1kJ/mol

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