Question 1

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

Accepted Answer

The answer of When an inhibitor molecule binds to a(n)...

Question 2

Proteins are used as energy sources only when carbohydrates and lipids are not available.

Accepted Answer

A) True 
 B)False

Question 3

All of the following are associated with chemiosmosis EXCEPT:

Accepted Answer

A)  phosphorylation of 34 molecules of ADP. 
B)  oxidative phosphorylation. 
C)  creation of a proton gradient. 
D)  beta- oxidation. 
E)  ATP synthase. 
A)  phosphorylation of 34 molecules of ADP. 
B)  oxidative phosphorylation. 
C)  creation of a proton gradient. 
D)  beta- oxidation. 
E)  ATP synthase.

Question 4

All of the following are forms of oxidation EXCEPT:

Accepted Answer

A)  loss of hydrogen atom. 
B)  gaining an oxygen atom and its electrons. 
C)  substrate- level phosphorylation. 
D)  loss of an electron. 
E)  a dehydrogenation event. 
A)  loss of hydrogen atom. 
B)  gaining an oxygen atom and its electrons. 
C)  substrate- level phosphorylation. 
D)  loss of an electron. 
E)  a dehydrogenation event.

Question 5

What is the major product of the Calvin- Benson cycle that can then be used to form glucose?

Accepted Answer

A)  ATP 
B)  CO2 
C)  NADPH 
D)  RuBP 
E)  glyceraldehyde 3- phosphate 
A)  ATP 
B)  CO2 
C)  NADPH 
D)  RuBP 
E)  glyceraldehyde 3- phosphate

Question 6

Transamination involves the transfer of an amine group from an amino acid to a metabolite, converting the metabolite into a new amino acid.

Accepted Answer

A) True 
 B)False

Question 7

What is the purpose of the light- dependent reactions of photosynthesis?

Accepted Answer

A)  production of ATP and NADPH 
B)  production of ATP and NADH 
C)  regeneration of NAD+ 
D)  carbon fixation 
E)  production of oxygen 
A)  production of ATP and NADPH 
B)  production of ATP and NADH 
C)  regeneration of NAD+ 
D)  carbon fixation 
E)  production of oxygen

Question 8

NADPH is associated with which of the following?

Accepted Answer

A)  beta- oxidation 
B)  the Embden- Meyerhof pathway 
C)  glycolysis 
D)  gluconeogenesis 
E)  the pentose phosphate pathway 
A)  beta- oxidation 
B)  the Embden- Meyerhof pathway 
C)  glycolysis 
D)  gluconeogenesis 
E)  the pentose phosphate pathway

Question 9

All of the following are by- products of various types of anaerobic respiration in bacteria EXCEPT:

Accepted Answer

A)  nitrite ions. 
B)  nitrous oxide. 
C)  methane. 
D)  carbonate. 
E)  hydrogen sulfide. 
A)  nitrite ions. 
B)  nitrous oxide. 
C)  methane. 
D)  carbonate. 
E)  hydrogen sulfide.

Question 10

All of the following are true statements concerning enzymes EXCEPT:

Accepted Answer

A)  They form a temporary intermediate compound with a substrate. 
B)  They can be used to catalyze a chemical reaction over and over again. 
C)  They function best at 37°C. 
D)  They are usually, but not always, proteins. 
E)  They can be denatured if the pH of their environment is too high or too low. 
A)  They form a temporary intermediate compound with a substrate. 
B)  They can be used to catalyze a chemical reaction over and over again. 
C)  They function best at 37°C. 
D)  They are usually, but not always, proteins. 
E)  They can be denatured if the pH of their environment is too high or too low.

Question 11

RuBP is associated with which of the following?

Accepted Answer

A)  chemiosmosis 
B)  the tricarboxylic acid cycle 
C)  the Embden- Meyerhof pathway 
D)  the Calvin- Benson cycle 
E)  the Entner- Doudoroff pathway 
A)  chemiosmosis 
B)  the tricarboxylic acid cycle 
C)  the Embden- Meyerhof pathway 
D)  the Calvin- Benson cycle 
E)  the Entner- Doudoroff pathway

Question 12

Ribozymes are enzymes that cleave the subunits of the ribosome.

Accepted Answer

A) True 
 B)False

Question 13

The of an enzyme is reached when all active sites have bound substrate molecules.

Accepted Answer

The answer of The of an enzyme is reached when...

Question 14

During chemiosmosis, electrons are pumped across a membrane in order to produce ATP.

Accepted Answer

A) True 
 B)False

Question 15

The purpose of electron transport is to create a(n) _ _ across a membrane that can then be used to make ATP.

Accepted Answer

The answer of The purpose of electron transport is to...

Question 16

Which of the following is a lipid- soluble molecule found in electron transport chains?

Accepted Answer

A)  thylakoids 
B)  ubiquinones 
C)  metal- containing proteins 
D)  flavoproteins 
E)  cytochromes 
A)  thylakoids 
B)  ubiquinones 
C)  metal- containing proteins 
D)  flavoproteins 
E)  cytochromes

Question 17

All of the following are true statements concerning glycolysis EXCEPT:

Accepted Answer

A)  It involves the conversion of a molecule of glucose into a molecule of pyruvic acid. 
B)  It produces ATP by substrate- level phosphorylation. 
C)  It uses, as well as produces, ATP. 
D)  It is a pathway common to both respiration and fermentation. 
E)  It occurs in the cytoplasm of the cell. 
A)  It involves the conversion of a molecule of glucose into a molecule of pyruvic acid. 
B)  It produces ATP by substrate- level phosphorylation. 
C)  It uses, as well as produces, ATP. 
D)  It is a pathway common to both respiration and fermentation. 
E)  It occurs in the cytoplasm of the cell.

Question 18

are enzymes used in the catabolism of fats.

Accepted Answer

The answer of are enzymes used in the catabolism of...

Question 19

Explain how cells use and regulate their enzymes as a way to control their metabolism.

Accepted Answer

Because enzymes are involved in most, if

Question 20

The conversion of pyruvic acid to acetyl- CoA can be described as _ , since a molecule of CO2 is produced as a by- product.

Accepted Answer

A)  respiration 
B)  phosphorylation 
C)  amination 
D)  decarboxylation 
E)  oxidation 
A)  respiration 
B)  phosphorylation 
C)  amination 
D)  decarboxylation 
E)  oxidation

Exam 5: Microbial Metabolism

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

Proteins are used as energy sources only when carbohydrates and lipids are not available.

All of the following are associated with chemiosmosis EXCEPT:

All of the following are forms of oxidation EXCEPT:

What is the major product of the Calvin- Benson cycle that can then be used to form glucose?

Transamination involves the transfer of an amine group from an amino acid to a metabolite, converting the metabolite into a new amino acid.

What is the purpose of the light- dependent reactions of photosynthesis?

NADPH is associated with which of the following?

All of the following are by- products of various types of anaerobic respiration in bacteria EXCEPT:

All of the following are true statements concerning enzymes EXCEPT:

RuBP is associated with which of the following?

Ribozymes are enzymes that cleave the subunits of the ribosome.

The of an enzyme is reached when all active sites have bound substrate molecules.

During chemiosmosis, electrons are pumped across a membrane in order to produce ATP.

The purpose of electron transport is to create a(n) _ _ across a membrane that can then be used to make ATP.

Which of the following is a lipid- soluble molecule found in electron transport chains?

All of the following are true statements concerning glycolysis EXCEPT:

are enzymes used in the catabolism of fats.

Explain how cells use and regulate their enzymes as a way to control their metabolism.

The conversion of pyruvic acid to acetyl- CoA can be described as _ , since a molecule of CO2 is produced as a by- product.

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Aids and Other Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

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