Question 1

Where is the most ATP generated for eukaryotic cells?

Accepted Answer

A)  in the outer membrane of the mitochondria 
B)  on ribosomes 
C)  in the cytosol 
D)  in the mitochondrial matrix 
E)  in the cytoplasmic membrane 
A)  in the outer membrane of the mitochondria 
B)  on ribosomes 
C)  in the cytosol 
D)  in the mitochondrial matrix 
E)  in the cytoplasmic membrane D

Question 2

The synthesis of acetyl- CoA from pyruvic acid serves as a bridge between glycolysis and which of the following processes?

Accepted Answer

A)  the Entner- Doudoroff pathway 
B)  chemiosmosis 
C)  the Calvin- Benson cycle 
D)  fermentation 
E)  the Krebs cycle 
A)  the Entner- Doudoroff pathway 
B)  chemiosmosis 
C)  the Calvin- Benson cycle 
D)  fermentation 
E)  the Krebs cycle E

Question 3

Laboratory fermentation tests often include a pH indicator because many bacteria produce as they ferment carbohydrates.

Accepted Answer

acids

Question 4

During electron transport in chloroplast thylakoids, protons are pumped outside the thylakoid into a space called the _.

Accepted Answer

The answer of During electron transport in chloroplast thylakoids, protons...

Question 5

Which of the following is a common feature of chemiosmosis and the light- dependent reactions of photosynthesis?

Accepted Answer

A)  reduction of NADP+ 
B)  electron transport 
C)  a proton gradient 
D)  Both B and C are correct. 
E)  A, B, and C are correct. 
A)  reduction of NADP+ 
B)  electron transport 
C)  a proton gradient 
D)  Both B and C are correct. 
E)  A, B, and C are correct.

Question 6

are enzymes that simply rearrange the atoms within a molecule.

Accepted Answer

The answer of are enzymes that simply rearrange the atoms...

Question 7

All of the following are true statements regarding fermentation EXCEPT:

Accepted Answer

A)  It starts with glycolysis. 
B)  NADH is oxidized. 
C)  The final electron acceptor is an organic molecule. 
D)  Ethanol and lactic acid are possible substrates. 
E)  The main goal is the regeneration of NAD+. 
A)  It starts with glycolysis. 
B)  NADH is oxidized. 
C)  The final electron acceptor is an organic molecule. 
D)  Ethanol and lactic acid are possible substrates. 
E)  The main goal is the regeneration of NAD+.

Question 8

Explain why fermentation is a necessary alternative to respiration in many cells.

Accepted Answer

Respiration is possible only when electr

Question 9

A substrate is

Accepted Answer

A)  an inorganic cofactor for an enzyme. 
B)  a chemical that increases the likelihood of a particular reaction. 
C)  an enzyme that has lost its three- dimensional structure. 
D)  an enzyme made out of RNA. 
E)  the molecule upon which a particular enzyme acts. 
A)  an inorganic cofactor for an enzyme. 
B)  a chemical that increases the likelihood of a particular reaction. 
C)  an enzyme that has lost its three- dimensional structure. 
D)  an enzyme made out of RNA. 
E)  the molecule upon which a particular enzyme acts.

Question 10

Folic acid is necessary for the biosynthesis of which of the following?

Accepted Answer

A)  acetyl- CoA 
B)  nucleotides 
C)  amino acids 
D)  glyceraldehyde 3- phosphate 
E)  fatty acids 
A)  acetyl- CoA 
B)  nucleotides 
C)  amino acids 
D)  glyceraldehyde 3- phosphate 
E)  fatty acids

Question 11

Amphibolic reactions are neither catabolic nor anabolic.

Accepted Answer

A) True 
 B)False

Question 12

All of the following are characteristics of noncyclic photophosphorylation EXCEPT:

Accepted Answer

A)  both ATP and NADPH are generated. 
B)  it requires both photosystem I and II. 
C)  electrons are obtained from molecules such as water. 
D)  it occurs in all plants and algae. 
E)  electrons return to the photosystem that generated them. 
A)  both ATP and NADPH are generated. 
B)  it requires both photosystem I and II. 
C)  electrons are obtained from molecules such as water. 
D)  it occurs in all plants and algae. 
E)  electrons return to the photosystem that generated them.

Question 13

Describe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity.

Accepted Answer

Feedback inhibition is also known as neg

Question 14

Which of the following does NOT happen during the Krebs cycle?

Accepted Answer

A)  NADH is oxidized. 
B)  Oxaloacetic acid is regenerated. 
C)  Substrate- level phosphorylation occurs. 
D)  GTP is produced. 
E)  Two molecules of CO2 are given off. 
A)  NADH is oxidized. 
B)  Oxaloacetic acid is regenerated. 
C)  Substrate- level phosphorylation occurs. 
D)  GTP is produced. 
E)  Two molecules of CO2 are given off.

Question 15

Which of the following is a true statement concerning the structure and function of enzymes?

Accepted Answer

A)  An apoenzyme is a combination of a cofactor bound to a holoenzyme. 
B)  After an enzyme has catalyzed a reaction, it resumes its original shape and can interact with a new substrate molecule. 
C)  The higher the temperature, the faster an enzyme will work. 
D)  Competitive inhibition of an enzyme occurs when an inhibitor binds to an allosteric site on the enzyme. 
E)  All enzymes bind to cofactors necessary for their function. 
A)  An apoenzyme is a combination of a cofactor bound to a holoenzyme. 
B)  After an enzyme has catalyzed a reaction, it resumes its original shape and can interact with a new substrate molecule. 
C)  The higher the temperature, the faster an enzyme will work. 
D)  Competitive inhibition of an enzyme occurs when an inhibitor binds to an allosteric site on the enzyme. 
E)  All enzymes bind to cofactors necessary for their function.

Question 16

Sulfanilamide is an antimicrobial drug that mimics the shape of an important substrate for a particular bacterial enzyme, thereby inhibiting the enzyme. This type of inhibition is known as

Accepted Answer

A)  competitive inhibition. 
B)  excitatory allosteric control. 
C)  allosteric inhibition. 
D)  Both A and C are correct. 
E)  A, B, and C are correct. 
A)  competitive inhibition. 
B)  excitatory allosteric control. 
C)  allosteric inhibition. 
D)  Both A and C are correct. 
E)  A, B, and C are correct.

Question 17

In which of the following stages of glycolysis is ATP made?

Accepted Answer

A)  lysis stage 
B)  energy- investment stage 
C)  energy- conserving stage 
D)  Both B and C are correct. 
E)  Both A and B are correct. 
A)  lysis stage 
B)  energy- investment stage 
C)  energy- conserving stage 
D)  Both B and C are correct. 
E)  Both A and B are correct.

Question 18

Fermentation pathways provide a cell with an alternative way to regenerate NAD+ for glycolysis.

Accepted Answer

A) True 
 B)False

Question 19

How many ATP molecules are produced from the NADH generated by the catabolism of a molecule of glucose?

Accepted Answer

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

Question 20

All of the following are true statements concerning reduction reactions EXCEPT:

Accepted Answer

A)  An electron acceptor becomes more positively charged. 
B)  They frequently involve electron carrier molecules. 
C)  An electron acceptor gains an electron. 
D)  They are coupled with oxidation reactions. 
E)  A molecule gains a hydrogen atom. 
A)  An electron acceptor becomes more positively charged. 
B)  They frequently involve electron carrier molecules. 
C)  An electron acceptor gains an electron. 
D)  They are coupled with oxidation reactions. 
E)  A molecule gains a hydrogen atom.

Exam 5: Microbial Metabolism

Where is the most ATP generated for eukaryotic cells?

The synthesis of acetyl- CoA from pyruvic acid serves as a bridge between glycolysis and which of the following processes?

Laboratory fermentation tests often include a pH indicator because many bacteria produce as they ferment carbohydrates.

During electron transport in chloroplast thylakoids, protons are pumped outside the thylakoid into a space called the _.

Which of the following is a common feature of chemiosmosis and the light- dependent reactions of photosynthesis?

are enzymes that simply rearrange the atoms within a molecule.

All of the following are true statements regarding fermentation EXCEPT:

Explain why fermentation is a necessary alternative to respiration in many cells.

A substrate is

Folic acid is necessary for the biosynthesis of which of the following?

Amphibolic reactions are neither catabolic nor anabolic.

All of the following are characteristics of noncyclic photophosphorylation EXCEPT:

Describe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity.

Which of the following does NOT happen during the Krebs cycle?

Which of the following is a true statement concerning the structure and function of enzymes?

Sulfanilamide is an antimicrobial drug that mimics the shape of an important substrate for a particular bacterial enzyme, thereby inhibiting the enzyme. This type of inhibition is known as

In which of the following stages of glycolysis is ATP made?

Fermentation pathways provide a cell with an alternative way to regenerate NAD+ for glycolysis.

How many ATP molecules are produced from the NADH generated by the catabolism of a molecule of glucose?

All of the following are true statements concerning reduction reactions EXCEPT:

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

Applied and Environmental Microbiology

Filters