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. reduced

B. oxidized

Question #2

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

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

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

C. a collection of unrelated enzyme at the plasma membrane

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

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

Question #3

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

A. all contain iron to attract electrons

B. are reduced when electrons are lost

C. can be reversibly oxidized and reduced

D. gain electrons when they are oxidized

Question #4

Which of the following organisms can perform glycolysis?

A. A redwood tree

B. All of these

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

D. E coli bacteria

Question #5

The main waste product of the Krebs cycle is ___

A. H20

B. Heat

C. CO2

D. O2

Question #6

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

A. pyruvate

B. sulfate

C. oxygen

D. lactate

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. Glycolysis slows down

C. ADP usage goes up

D. The amount of NADH increases