Cal State LA » Biology » Biology 1100 - Principles of Biology » Fall 2019 » Quiz Week 5

Question #1

The pyruvate in the reaction below is ____. Pyruvate + 2e => lactate

A. oxidized

B. reduced

Question #2

Which of the following describes a metabolic pathway? (Choose all that apply),,

A. One enzyme activates another enzyme, which then activates another enzyme

B. Enzyme Q breaksdown substrate A into products X, Y and Z

C. Enzyme P can have two possible substrates, R and S

D. a 6-carbon molecule is converted into a 5-carbon molecule, which is then converted into a 4-carbon molecule.

E. a collection of unrelated enzyme at the plasma membrane

Question #3

One common feature of electron carriers such as NAD+ is that they ___

A. can be reversibly oxidized and reduced

B. gain electrons when they are oxidized

C. all contain iron to attract electrons

D. are reduced when electrons are lost

Question #4

Which of the following organisms can perform glycolysis?

A. All of these

B. A redwood tree

C. E coli bacteria

D. P-22, the world’s most famous mountain lion

Question #5

The main waste product of the Krebs cycle is ___

A. CO2

B. O2

C. Heat

D. H20

Question #6

Which of the following is a final acceptor in the electron transport chains of organisms that conduct anaerobic cellular respiration?

A. sulfate

B. oxygen

C. lactate

D. pyruvate

Question #7

When cells possess plentiful amounts of ATP, what happens to cellular respiration processes within the cell?

A. The amount of NADH increases

B. The amount of NADH increases

C. Glycolysis slows down

D. ADP usage goes up