BMS 127 Ch. 5 Microbial Metabolism

Question 0

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Includes dehydration synthesis reactions

Answer 0

anabolism

Question 1

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Breaks a large molecule into smaller ones

Answer 1

catabolism

Question 2

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Is exergonic

Answer 2

catabolism

Question 3

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Is endergonic

Answer 3

anabolism

Question 4

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Involves the production of cell membrane constituents

Answer 4

anabolism

Question 5

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Includes hydrolytic reactions

Answer 5

catabolism

Question 6

What type of metabolism?

a. anabolism only
b. both anabolism and catabolism (amphibolic)
c. catabolism only

Includes metabolism

Answer 6

both anabolism and catabolism

Question 7

Redox reactions

a. transfer electrons
b. transfer energy
c. involve oxidation and reduction
d. all of the above

Answer 7

all of the above

Question 8

A reduced molecule ________ (gains/loses) electrons.

Answer 8

gains

Question 9

How do catalysts speed up a chemical reaction?

Answer 9

by lowering activation energy

Question 10

Are coenzymes organic or inorganic cofactors?

Answer 10

organic

Question 11

What is the function of ribozymes?

Answer 11

to process RNA molecules in eukaryotes

Question 12

Which of the following does NOT affect the function of enzymes?

a. ubiquinone
b. substrate concentration
c. temperature
d. competitive inhibition

Answer 12

a. ubiquinone

Question 13

Most oxidation reactions in bacteria involve the _________ of hydrogen ions and electrons.

Answer 13

removal

Question 14

Under ideal conditions, the fermentation of one glucose molecule by a bacterium allows a net gain of how many ATP molecules?

Answer 14

2

Question 15

Under ideal conditions, the complete aerobic oxidation of one molecule of glucose by a bacterium allows a net gain of how many ATP molecules?

Answer 15

38

Question 16

Which of the following statements is NOT true of the Entner-Doudoroff pathway?

a. It is a series of reactions that synthesizes glucose
b. Its products are sometimes used to determine the presence of Pseudomonas
c. It is a pathway of chemical reactions that catabolizes glucose
d. It is an alternative pathway of glycolysis

Answer 16

a. It is a series of reactions that synthesizes glucose

Question 17

Reactions involved in the light-independent reactions of photosynthesis constitute the _______.

Answer 17

Calvin-Benson cycle

Question 18

Is the glycolysis pathway anabolic or catabolic?

Answer 18

catabolic

Question 19

What is a major difference between anaerobic respiration and anaerobic fermentation?

Answer 19

anaerobic fermentation uses organic molecules within the cell as final electron acceptors

Question 20

What is substrate-level phosphorylation?

Answer 20

Occurs when energy from a compound containing phosphate reacts with ADP to form ATP

Question 21

What is oxidative phosphorylation?

Answer 21

Involves formation of ATP via reduction of coenzymes in the electron transport chain.

Question 22

When does carbohydrate catabolism begin?

Answer 22

with glycolysis

Question 23

What is saturation?

Answer 23

Occurs when all active sites on substrate molecules are filled.