Intro to Metabolism

Question 1

What is often the initial electron acceptor?

Answer 1

Nicotinamide Adenine Dinucleotide (NAD)

Question 2

Give two other examples of intermediate electron acceptor

Answer 2

Flavin Adenine Dinucleotide (FAD) and Flavin Mononucleotide (FMN)

Question 3

In animals, what is often the final electron acceptor?

Answer 3

Oxygen

Question 4

What is the ATP yield in glycolysis per glucose molecule?

Answer 4

2 ATP molecules

Question 5

Is oxygen required for glycolysis?

Answer 5

No

Question 6

In animals, how is NAD+ regenerated?

Answer 6

Pyruvate is reduced to lactate

Question 7

In yeast how is NAD+ regenerated?

Answer 7

Pyruvate is converted to ethanol and CO2

Question 8

What is an endergonic reaction?

Answer 8

A reaction which requires a net input of energy (ie photosynthesis)

Question 9

What is an exergonic reaction?

Answer 9

A reaction which provides a net output of energy (ie cellular respiration

Question 10

What is redox potential?

Answer 10

The measure of a compound’s readiness to transfer electrons

Question 11

What is the name of the process that is required to make ATP from ADP and Pi?

Answer 11

Oxidative phosphorylation