Question 1

Both respiration and photosynthesis use water molecules for the donation of hydrogen ions.

Accepted Answer

A) True 
 B)False

Question 2

Figure 5.8
  
-In Figure 5.8, where is ATP produced?

Accepted Answer

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

Question 3

Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, α-ketoglutarate dehydrogenase?

Accepted Answer

A)  ADP 
B)  α-ketoglutaric acid 
C)  NAD+ 
D)  NADH 
E)  citric acid 
A)  ADP 
B)  α-ketoglutaric acid 
C)  NAD+ 
D)  NADH 
E)  citric acid

Question 4

An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of the following EXCEPT

Accepted Answer

A)  noncompetitive inhibition. 
B)  allosteric inhibition. 
C)  competitive inhibition. 
D)  feedback inhibition. 
A)  noncompetitive inhibition. 
B)  allosteric inhibition. 
C)  competitive inhibition. 
D)  feedback inhibition.

Question 5

Compare and contrast photophosphorylation and oxidative phosphorylation.

Accepted Answer

Photophosphorylation and oxidative phosp

Question 6

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 7

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.

Question 8

Streptococcus lacks an electron transport chain. How does this bacterium reoxidize NADH? Where is the NADH formed?

Accepted Answer

Streptococcus is a genus of bacteria tha

Question 9

Which of the following is the best definition of fermentation?

Accepted Answer

A)  the production of energy by oxidative-level phosphorylation 
B)  the complete catabolism of glucose to Co2 and H2O 
C)  the production of energy by both substrate and oxidative phosphorylation 
D)  the partial oxidation of glucose with organic molecules serving as electron acceptors 
E)  the partial reduction of glucose to pyruvic acid 
A)  the production of energy by oxidative-level phosphorylation 
B)  the complete catabolism of glucose to Co2 and H2O 
C)  the production of energy by both substrate and oxidative phosphorylation 
D)  the partial oxidation of glucose with organic molecules serving as electron acceptors 
E)  the partial reduction of glucose to pyruvic acid

Question 10

What is the fate of pyruvic acid in an organism that uses aerobic respiration?

Accepted Answer

A)  It is oxidized in the electron transport chain. 
B)  It is reduced to lactic acid. 
C)  It is catabolized in glycolysis. 
D)  It reacts with oxaloacetate to form citrate. 
E)  It is converted into acetyl CoA. 
A)  It is oxidized in the electron transport chain. 
B)  It is reduced to lactic acid. 
C)  It is catabolized in glycolysis. 
D)  It reacts with oxaloacetate to form citrate. 
E)  It is converted into acetyl CoA.

Question 11

Researchers are developing a ribozyme that cleaves the HIV genome. This pharmaceutical agent could be described as

Accepted Answer

A)  an RNA molecule capable of catalysis. 
B)  a genetic transposable element. 
C)  a protease inhibitor. 
D)  a competitive inhibitor for reverse transcriptase. 
E)  a hydrolase. 
A)  an RNA molecule capable of catalysis. 
B)  a genetic transposable element. 
C)  a protease inhibitor. 
D)  a competitive inhibitor for reverse transcriptase. 
E)  a hydrolase.

Question 12

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 13

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 14

What is the most acidic place in Figure 5.8?

Accepted Answer

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

Question 15

The use of enzymes is necessary to increase the activation energy requirements of a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 16

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 17

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.

Question 18

Which of the following statements about anaerobic respiration is FALSE?

Accepted Answer

A)  It requires cytochromes. 
B)  The complete Krebʹs cycle is utilized. 
C)  It yields lower amounts of ATP when compared to aerobic respiration. 
D)  It involves the reduction of an organic final electron acceptor. 
E)  It generates ATP. 
A)  It requires cytochromes. 
B)  The complete Krebʹs cycle is utilized. 
C)  It yields lower amounts of ATP when compared to aerobic respiration. 
D)  It involves the reduction of an organic final electron acceptor. 
E)  It generates ATP.

Question 19

Which organism is NOT correctly matched to its energy source?

Accepted Answer

A)  chemoheterotroph - glucose 
B)  photoheterotroph - light 
C)  photoautotroph - Co2 
D)  chemoautotroph - Fe2+ 
E)  chemoautotroph-NH3 
A)  chemoheterotroph - glucose 
B)  photoheterotroph - light 
C)  photoautotroph - Co2 
D)  chemoautotroph - Fe2+ 
E)  chemoautotroph-NH3

Question 20

Summarize energy production in cells in a single sentence.

Accepted Answer

Energy production in cells pri

Exam 5: Microbial Metabolism

Both respiration and photosynthesis use water molecules for the donation of hydrogen ions.

Figure 5.8 -In Figure 5.8, where is ATP produced?

Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, α-ketoglutarate dehydrogenase?

An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of the following EXCEPT

Compare and contrast photophosphorylation and oxidative phosphorylation.

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?

Streptococcus lacks an electron transport chain. How does this bacterium reoxidize NADH? Where is the NADH formed?

Which of the following is the best definition of fermentation?

What is the fate of pyruvic acid in an organism that uses aerobic respiration?

Researchers are developing a ribozyme that cleaves the HIV genome. This pharmaceutical agent could be described as

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

A urease test is used to identify Mycobacterium tuberculosis because

What is the most acidic place in Figure 5.8?

The use of enzymes is necessary to increase the activation energy requirements of a chemical reaction.

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

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

Which of the following statements about anaerobic respiration is FALSE?

Which organism is NOT correctly matched to its energy source?

Summarize energy production in cells in a single sentence.

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

Innate Immunity: Nonspecific Defenses of the Host

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

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