Question 1

How many ATP molecules can theoretically be produced from the NADH generated by the catabolism of a molecule of glucose during aerobic respiration?

Accepted Answer

A)  34 
B)  30 
C)  38 
D)  36 
E)  4 
A)  34 
B)  30 
C)  38 
D)  36 
E)  4 B

Question 2

Bacteriochlorophyll a absorbs ________ light.

Accepted Answer

A)  350 nm, ultraviolet 
B)  425 nm, violet 
C)  660 nm, red 
D)  both 425 & 660 nm (violet and red) 
E)  all visible 
A)  350 nm, ultraviolet 
B)  425 nm, violet 
C)  660 nm, red 
D)  both 425 & 660 nm (violet and red) 
E)  all visible A

Question 3

When a noncompetitive inhibitor molecule binds to a(n) (active/allosteric/substrate) site on an enzyme, the shape of the active site changes so that the substrate molecules can no longer bind.

Accepted Answer

allosteric

Question 4

The amount of energy required for a reaction to occur is its activation energy.

Accepted Answer

A) True 
 B)False

Question 5

Hydrolases are generally involved in ________ reactions.

Accepted Answer

A)  anabolic 
B)  catabolic 
C)  both anabolic and catabolic 
D)  neither anabolic nor catabolic 
E)  oxidation-reduction 
A)  anabolic 
B)  catabolic 
C)  both anabolic and catabolic 
D)  neither anabolic nor catabolic 
E)  oxidation-reduction

Question 6

During the synthesis of acetyl-CoA from pyruvic acid, ________ is produced.

Accepted Answer

A)  ATP 
B)  NADH 
C)  FADH₂ 
D)  H₂O 
E)  acetic acid 
A)  ATP 
B)  NADH 
C)  FADH₂ 
D)  H₂O 
E)  acetic acid

Question 7

As the concentration of substrate increases, the activity of the enzyme decreases.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following produces NADPH?

Accepted Answer

A)  the pentose phosphate pathway only 
B)  the Calvin-Benson cycle only 
C)  the Embden-Meyerhof pathway only 
D)  both the Embden-Meyerhof and Calvin-Benson cycle pathways 
E)  both the pentose phosphate and Entner-Doudoroff pathways 
A)  the pentose phosphate pathway only 
B)  the Calvin-Benson cycle only 
C)  the Embden-Meyerhof pathway only 
D)  both the Embden-Meyerhof and Calvin-Benson cycle pathways 
E)  both the pentose phosphate and Entner-Doudoroff pathways

Question 9

Compare and contrast cyclic and noncyclic photophosphorylation.

Accepted Answer

Both cyclic photophosphorylation and non

Question 10

Which of the following statements concerning glycolysis is TRUE?

Accepted Answer

A)  The first step of glycolysis involves oxidative phosphorylation. 
B)  The glycolytic pathway is cyclical. 
C)  Glucose is activated by substrate-level phosphorylation. 
D)  Ribulose 5-phosphate is an intermediate of glycolysis. 
E)  Two NADH molecules are reduced during glycolysis. 
A)  The first step of glycolysis involves oxidative phosphorylation. 
B)  The glycolytic pathway is cyclical. 
C)  Glucose is activated by substrate-level phosphorylation. 
D)  Ribulose 5-phosphate is an intermediate of glycolysis. 
E)  Two NADH molecules are reduced during glycolysis.

Question 11

Which of the following is the CORRECT sequence of stages in glycolysis?

Accepted Answer

A)  energy-conservation, energy-investment, lysis 
B)  lysis, energy-investment, energy-conservation 
C)  energy-investment, lysis, energy-conservation 
D)  lysis,energy-conservation, energy-investment 
E)  energy-investment, energy-conservation, lysis 
A)  energy-conservation, energy-investment, lysis 
B)  lysis, energy-investment, energy-conservation 
C)  energy-investment, lysis, energy-conservation 
D)  lysis,energy-conservation, energy-investment 
E)  energy-investment, energy-conservation, lysis

Question 12

Essential amino acids are amino acids that cannot be synthesized by an organism and so must be provided as nutrients.

Accepted Answer

A) True 
 B)False

Question 13

When a cell forms an amino acid by adding an amine group derived from ammonia to a precursor metabolite, this process is called

Accepted Answer

A)  amination. 
B)  transamination. 
C)  reduction. 
D)  polymerization. 
E)  deamination. 
A)  amination. 
B)  transamination. 
C)  reduction. 
D)  polymerization. 
E)  deamination.

Question 14

Laboratory fermentation tests often include a pH indicator because many bacteria produce (O₂/bases/acids) as they ferment carbohydrates.

Accepted Answer

The answer of Laboratory fermentation tests often include a pH...

Question 15

Some bacteria use (acetyl-CoA/DHAP/TMAO) as a final electron receptor, resulting in a detectable odor.

Accepted Answer

The answer of Some bacteria use (acetyl-CoA/DHAP/TMAO) as a final...

Question 16

The production of NADH takes place during the ________ stage(s) of glycolysis.

Accepted Answer

A)  energy-conservation 
B)  energy-investment 
C)  lysis 
D)  lysis and energy-investment 
E)  energy-investment and energy-conservation 
A)  energy-conservation 
B)  energy-investment 
C)  lysis 
D)  lysis and energy-investment 
E)  energy-investment and energy-conservation

Question 17

Which of the following is a by-product of the catabolism of proteins?

Accepted Answer

A)  lactic acid 
B)  acetyl-CoA 
C)  proteases 
D)  ammonia 
E)  carbon dioxide 
A)  lactic acid 
B)  acetyl-CoA 
C)  proteases 
D)  ammonia 
E)  carbon dioxide

Question 18

During reactions catalyzed by oxidoreductases an electron donor is

Accepted Answer

A)  oxidized. 
B)  reduced. 
C)  synthesized. 
D)  degraded. 
E)  unaltered. 
A)  oxidized. 
B)  reduced. 
C)  synthesized. 
D)  degraded. 
E)  unaltered.

Question 19

Electrons are transferred in the Krebs cycle in the form of (oxygen/hydrogen) atoms to NAD+ and FAD.

Accepted Answer

The answer of Electrons are transferred in the Krebs cycle...

Question 20

Where is the majority of ATP generated in prokaryotic cells?

Accepted Answer

A)  in the cytoplasmic membrane 
B)  in the cytosol 
C)  in the thylakoids 
D)  in the inner mitochondrial membrane 
E)  on ribosomes 
A)  in the cytoplasmic membrane 
B)  in the cytosol 
C)  in the thylakoids 
D)  in the inner mitochondrial membrane 
E)  on ribosomes

Exam 5: Microbial Metabolism

How many ATP molecules can theoretically be produced from the NADH generated by the catabolism of a molecule of glucose during aerobic respiration?

Bacteriochlorophyll a absorbs ________ light.

When a noncompetitive inhibitor molecule binds to a(n) (active/allosteric/substrate) site on an enzyme, the shape of the active site changes so that the substrate molecules can no longer bind.

The amount of energy required for a reaction to occur is its activation energy.

Hydrolases are generally involved in ________ reactions.

During the synthesis of acetyl-CoA from pyruvic acid, ________ is produced.

As the concentration of substrate increases, the activity of the enzyme decreases.

Which of the following produces NADPH?

Compare and contrast cyclic and noncyclic photophosphorylation.

Which of the following statements concerning glycolysis is TRUE?

Which of the following is the CORRECT sequence of stages in glycolysis?

Essential amino acids are amino acids that cannot be synthesized by an organism and so must be provided as nutrients.

When a cell forms an amino acid by adding an amine group derived from ammonia to a precursor metabolite, this process is called

Laboratory fermentation tests often include a pH indicator because many bacteria produce (O₂/bases/acids) as they ferment carbohydrates.

Some bacteria use (acetyl-CoA/DHAP/TMAO) as a final electron receptor, resulting in a detectable odor.

The production of NADH takes place during the ________ stage(s) of glycolysis.

Which of the following is a by-product of the catabolism of proteins?

During reactions catalyzed by oxidoreductases an electron donor is

Electrons are transferred in the Krebs cycle in the form of (oxygen/hydrogen) atoms to NAD+ and FAD.

Where is the majority of ATP generated in prokaryotic cells?

A Brief History of Microbiology

The Chemistry of Microbiology

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