Question 1

Which biochemical process is NOT used during glycolysis?

Accepted Answer

A)  substrate-level phosphorylation 
B)  beta oxidation 
C)  oxidation-reduction 
D)  carbohydrate catabolism 
E)  enzymatic reactions 
A)  substrate-level phosphorylation 
B)  beta oxidation 
C)  oxidation-reduction 
D)  carbohydrate catabolism 
E)  enzymatic reactions B

Question 2

Which of the following statements regarding the glycolysis pathway is FALSE?

Accepted Answer

A)  Two pyruvate molecules are generated. 
B)  One molecule of ATP is expended. 
C)  Two molecules of water are generated. 
D)  Four ATP molecules are generated via substrate-level phosphorylation. 
E)  Two NADH molecules are generated. 
A)  Two pyruvate molecules are generated. 
B)  One molecule of ATP is expended. 
C)  Two molecules of water are generated. 
D)  Four ATP molecules are generated via substrate-level phosphorylation. 
E)  Two NADH molecules are generated. B

Question 3

Once an enzyme has converted substrates into products, the active site reverts back to its original form.

Accepted Answer

A) True 
 B)False  True

Question 4

Cyanobacteria are a type of

Accepted Answer

A)  chemoautotroph. 
B)  chemoheterotroph. 
C)  photoautotroph. 
D)  photoheterotroph. 
A)  chemoautotroph. 
B)  chemoheterotroph. 
C)  photoautotroph. 
D)  photoheterotroph.

Question 5

Which of the following statements are TRUE? 1- Electron carriers are located at ribosomes.
2- ATP is a common intermediate between catabolic and anabolic pathways.
3- ATP is used for the long-term storage of energy and so is often found in storage granules. 4-Anaerobic organisms are capable of generating ATP via respiration.
5-ATP can be generated by the flow of protons across protein channels.

Accepted Answer

A)  1, 2, 3 
B)  1, 3, 4 
C)  2, 4, 5 
D)  2, 3, 5 
E)  All of the statements are true. 
A)  1, 2, 3 
B)  1, 3, 4 
C)  2, 4, 5 
D)  2, 3, 5 
E)  All of the statements are true.

Question 6

Assume you are growing bacteria on a lipid medium that started at pH 7. The action of bacterial lipases should cause the pH of the medium to

Accepted Answer

A)  decrease. 
B)  increase. 
C)  stay the same. 
A)  decrease. 
B)  increase. 
C)  stay the same.

Question 7

Glycolysis is utilized by cells in both respiration and fermentation.

Accepted Answer

A) True 
 B)False

Question 8

In noncyclic photophosphorylation, O₂ is released from

Accepted Answer

A)  H₂O. 
B)  sunlight. 
C)  C6H12O6. 
D)  chlorophyll. 
E)  CO₂. 
A)  H₂O. 
B)  sunlight. 
C)  C6H12O6. 
D)  chlorophyll. 
E)  CO₂.

Question 9

The pentose phosphate pathway can be characterized as an anabolic pathway.

Accepted Answer

A) True 
 B)False

Question 10

Figure 5.8
  
-Refer to Figure 5.8. In aerobic respiration, where is water formed?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
E)  e 
A)  a 
B)  b 
C)  c 
D)  d 
E)  e

Question 11

Which of the following uses CO₂ for carbon and H2 for energy?

Accepted Answer

A)  chemoautotroph 
B)  chemoheterotroph 
C)  photoautotroph 
D)  photoheterotroph 
A)  chemoautotroph 
B)  chemoheterotroph 
C)  photoautotroph 
D)  photoheterotroph

Question 12

A urease test is used to identify Mycobacterium tuberculosis because

Accepted Answer

A)  M. tuberculosis produces urease. 
B)  some bacteria reduce nitrate ion. 
C)  urea accumulates during tuberculosis. 
D)  M. bovis can cause tuberculosis. 
E)  urease is a sign of tuberculosis. 
A)  M. tuberculosis produces urease. 
B)  some bacteria reduce nitrate ion. 
C)  urea accumulates during tuberculosis. 
D)  M. bovis can cause tuberculosis. 
E)  urease is a sign of tuberculosis.

Question 13

In general, ATP is generated in catabolic pathways and expended in anabolic pathways.

Accepted Answer

A) True 
 B)False

Question 14

Figure 5.1   Which compound is being reduced in the reaction shown in Figure 5.1?

Accepted Answer

A)  α-ketoglutaric acid and NAD+ 
B)  NADH and isocitric acid 
C)  NADH 
D)  isocitric acid and α-ketoglutaric acid 
E)  NAD+ 
A)  α-ketoglutaric acid and NAD+ 
B)  NADH and isocitric acid 
C)  NADH 
D)  isocitric acid and α-ketoglutaric acid 
E)  NAD+

Question 15

Which statements correspond to amphibolic pathways? 1. anabolic and catabolic reactions are joined through common intermediate
2) shared metabolic pathways
3) Feedback inhibition can help regulate rates of reactions
4) both types of reactions are necessary but do not occur simultaneously

Accepted Answer

A)  2, 3, 4 
B)  1, 2, 3, 4 
C)  1, 2, 3 
D)  1 only 
E)  2, 4 
A)  2, 3, 4 
B)  1, 2, 3, 4 
C)  1, 2, 3 
D)  1 only 
E)  2, 4

Question 16

Carbon fixation occurs during the light-independent phase of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 17

Gallionella bacteria can get energy from the reaction Fe₂+ → Fe3+. This reaction is an example of

Accepted Answer

A)  the Calvin-Benson cycle. 
B)  reduction. 
C)  fermentation. 
D)  photophosphorylation. 
E)  oxidation. 
A)  the Calvin-Benson cycle. 
B)  reduction. 
C)  fermentation. 
D)  photophosphorylation. 
E)  oxidation.

Question 18

The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT

Accepted Answer

A)  precursors for nucleic acids. 
B)  precursors for the synthesis of amino acids. 
C)  three ATPs. 
D)  NADPH. 
E)  precursors for the synthesis of glucose. 
A)  precursors for nucleic acids. 
B)  precursors for the synthesis of amino acids. 
C)  three ATPs. 
D)  NADPH. 
E)  precursors for the synthesis of glucose.

Question 19

Figure 5.8
  
-In Figure 5.8, the structure labeled ʺ1ʺ is

Accepted Answer

A)  NAD+. 
B)  ATP synthase. 
C)  cytoplasm. 
D)  a cell wall. 
E)  a plasma membrane. 
A)  NAD+. 
B)  ATP synthase. 
C)  cytoplasm. 
D)  a cell wall. 
E)  a plasma membrane.

Question 20

Figure 5.3   How would a noncompetitive inhibitor interfere with a reaction involving the enzyme shown in Figure 5.3?

Accepted Answer

A)  It would bind to a. 
B)  It would bind to b. 
C)  It would bind to c. 
D)  It would bind to d. 
E)  The answer cannot be determined based on the information provided. 
A)  It would bind to a. 
B)  It would bind to b. 
C)  It would bind to c. 
D)  It would bind to d. 
E)  The answer cannot be determined based on the information provided.

Exam 5: Microbial Metabolism

Which biochemical process is NOT used during glycolysis?

Which of the following statements regarding the glycolysis pathway is FALSE?

Once an enzyme has converted substrates into products, the active site reverts back to its original form.

Cyanobacteria are a type of

Assume you are growing bacteria on a lipid medium that started at pH 7. The action of bacterial lipases should cause the pH of the medium to

Glycolysis is utilized by cells in both respiration and fermentation.

In noncyclic photophosphorylation, O₂ is released from

The pentose phosphate pathway can be characterized as an anabolic pathway.

Figure 5.8 -Refer to Figure 5.8. In aerobic respiration, where is water formed?

Which of the following uses CO₂ for carbon and H2 for energy?

A urease test is used to identify Mycobacterium tuberculosis because

In general, ATP is generated in catabolic pathways and expended in anabolic pathways.

Figure 5.1 Which compound is being reduced in the reaction shown in Figure 5.1?

Which statements correspond to amphibolic pathways? 1. anabolic and catabolic reactions are joined through common intermediate 2) shared metabolic pathways 3) Feedback inhibition can help regulate rates of reactions 4) both types of reactions are necessary but do not occur simultaneously

Carbon fixation occurs during the light-independent phase of photosynthesis.

Gallionella bacteria can get energy from the reaction Fe₂+ → Fe3+. This reaction is an example of

The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT

Figure 5.8 -In Figure 5.8, the structure labeled ʺ1ʺ is

Figure 5.3 How would a noncompetitive inhibitor interfere with a reaction involving the enzyme shown in Figure 5.3?

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Innate Immunity: Nonspecific Defenses of the Host

Filters