Biology Test Biology Biochemistry & Metabolism

Question 1

Which molecule serves as the primary energy currency of the cell?

Accepted Answer

ATP

Answer

ADP

Answer

NADH

Answer

GTP

Question 2

Enzymes lower the activation energy of a reaction by:

Accepted Answer

Providing an alternative reaction pathway

Answer

Increasing substrate concentration

Answer

Raising the temperature

Answer

Adding more reactants

Question 3

Which process converts glucose into pyruvate in the cytoplasm?

Accepted Answer

Glycolysis

Answer

Krebs cycle

Answer

Oxidative phosphorylation

Answer

Beta-oxidation

Question 4

What is the net ATP yield from one glucose molecule during glycolysis?

Accepted Answer

2 ATP

Answer

4 ATP

Answer

36 ATP

Answer

38 ATP

Question 5

Anabolic reactions in metabolism are characterized by:

Accepted Answer

Building complex molecules from simpler ones

Answer

Breaking down large molecules

Answer

Releasing energy

Answer

Producing carbon dioxide

Question 6

Which coenzyme carries electrons from the Krebs cycle to the electron transport chain?

Accepted Answer

NAD+

Answer

FAD

Answer

CoA

Answer

ATP