Question 1

Each of the following are true of enzymes except

Accepted Answer

A) they can be used over and over. 
B) they may or may not require cofactors. 
C) their active site is specific to the substrate. 
D) they increase the activation energy of a reaction. 
E) All of the choices are true of enzymes. 
A) they can be used over and over. 
B) they may or may not require cofactors. 
C) their active site is specific to the substrate. 
D) they increase the activation energy of a reaction. 
E) All of the choices are true of enzymes.

Question 2

Glyceraldehyde 3-phosphate is an intermediary of glycolysis that can also be utilized in biosynthetic pathways.

Accepted Answer

A) True 
 B)False

Question 3

Enzymes that catalyze removing electrons from one substrate and adding electrons to another are called

Accepted Answer

A) phosphotransferases. 
B) oxidoreductases. 
C) decarboxylases. 
D) aminotransferases. 
E) ligases. 
A) phosphotransferases. 
B) oxidoreductases. 
C) decarboxylases. 
D) aminotransferases. 
E) ligases.

Question 4

Each of the following are electron carriers except

Accepted Answer

A) NAD. 
B) FAD. 
C) NADP. 
D) FADP. 
E) Coenzyme A. 
A) NAD. 
B) FAD. 
C) NADP. 
D) FADP. 
E) Coenzyme A.

Question 5

Which of the following represents the path of electrons during aerobic respiration?

Accepted Answer

A) glucose - NADH - electron transport chain - oxygen 
B) glucose - pyruvate - citric acid - oxygen 
C) NADH - ATP - electron transport chain- oxygen 
D) glucose - NADH - citric acid - ATP 
A) glucose - NADH - electron transport chain - oxygen 
B) glucose - pyruvate - citric acid - oxygen 
C) NADH - ATP - electron transport chain- oxygen 
D) glucose - NADH - citric acid - ATP

Question 6

During a fermentation experiment in lab, two different samples of grape juice have been inoculated with yeast.Air has been evacuated from sample I, but not from sample II.In which sample would you predict to the greater alcohol production?

Accepted Answer

A) sample I 
B) sample II 
C) Similar alcohol production is expected in both samples. 
D) This cannot be predicted based on the information provided. 
A) sample I 
B) sample II 
C) Similar alcohol production is expected in both samples. 
D) This cannot be predicted based on the information provided.

Question 7

The principle sites of amphibolic interaction occur during

Accepted Answer

A) glycolysis and photosynthesis. 
B) Krebs cycle and electron transport system. 
C) glycolysis and Krebs cycle. 
D) fermentation and Krebs cycle. 
E) fermentation and glycolysis. 
A) glycolysis and photosynthesis. 
B) Krebs cycle and electron transport system. 
C) glycolysis and Krebs cycle. 
D) fermentation and Krebs cycle. 
E) fermentation and glycolysis.

Question 8

ATP molecules are catalysts that lower the activation energy needed to initiate a reaction.

Accepted Answer

A) True 
 B)False

Question 9

The formation of citric acid from oxaloacetic acid and an acetyl group begins

Accepted Answer

A) glycolysis. 
B) the electron transport system. 
C) the Krebs cycle. 
D) fermentation. 
E) oxidative phosphorylation. 
A) glycolysis. 
B) the electron transport system. 
C) the Krebs cycle. 
D) fermentation. 
E) oxidative phosphorylation.

Question 10

Which of the following is not true of the light-dependent reactions of photosynthesis?

Accepted Answer

A) They occur in the thylakoid membranes. 
B) They generates NADPH. 
C) They generate glucose from CO2 and H2O. 
D) Photons cause magnesium to release electrons. 
E) ATP is generated by a chemiosmotic mechanism. 
A) They occur in the thylakoid membranes. 
B) They generates NADPH. 
C) They generate glucose from CO2 and H2O. 
D) Photons cause magnesium to release electrons. 
E) ATP is generated by a chemiosmotic mechanism.

Question 11

Metabolic pathways that regenerate their starting point are called _____ pathways.

Accepted Answer

A) linear 
B) bidirectional 
C) convergent 
D) cyclic 
E) divergent 
A) linear 
B) bidirectional 
C) convergent 
D) cyclic 
E) divergent

Question 12

Photosynthesis occurs in chloroplasts of prokaryotes.

Accepted Answer

A) True 
 B)False

Question 13

Many exoenzymes from pathogens are virulence factors.

Accepted Answer

A) True 
 B)False

Question 14

All of the following occur during the light-independent reactions EXCEPT

Accepted Answer

A) carbon fixation. 
B) reduction of intermediates by NADPH. 
C) phosphorylation of ADP to form ATP. 
D) regeneration or RuBP. 
A) carbon fixation. 
B) reduction of intermediates by NADPH. 
C) phosphorylation of ADP to form ATP. 
D) regeneration or RuBP.

Question 15

Each of the following are denaturing agents except

Accepted Answer

A) high temperature. 
B) low temperature. 
C) high pH. 
D) low pH. 
E) All of the choices are correct. 
A) high temperature. 
B) low temperature. 
C) high pH. 
D) low pH. 
E) All of the choices are correct.

Question 16

How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 17

A type of cofactor would be

Accepted Answer

A) vitamins. 
B) metallic ions. 
C) active sites. 
D) substrates. 
E) ribozymes. 
A) vitamins. 
B) metallic ions. 
C) active sites. 
D) substrates. 
E) ribozymes.

Question 18

Enzymes that function inside a cell are

Accepted Answer

A) apoenzymes. 
B) exoenzymes. 
C) constitutive enzymes. 
D) regulated enzymes. 
E) endoenzymes. 
A) apoenzymes. 
B) exoenzymes. 
C) constitutive enzymes. 
D) regulated enzymes. 
E) endoenzymes.

Question 19

In bacterial cells, the electron transport system is located in the

Accepted Answer

A) cell membrane. 
B) mitochondria. 
C) chloroplasts. 
D) ribosomes. 
E) cytoplasm. 
A) cell membrane. 
B) mitochondria. 
C) chloroplasts. 
D) ribosomes. 
E) cytoplasm.

Question 20

The reactions of fermentation function to regenerate _____ molecules for use in glycolysis.

Accepted Answer

A) pyruvic acid 
B) ATP 
C) NAD 
D) NADH 
E) glucose 
A) pyruvic acid 
B) ATP 
C) NAD 
D) NADH 
E) glucose

Exam 8: An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Each of the following are true of enzymes except

Glyceraldehyde 3-phosphate is an intermediary of glycolysis that can also be utilized in biosynthetic pathways.

Enzymes that catalyze removing electrons from one substrate and adding electrons to another are called

Each of the following are electron carriers except

Which of the following represents the path of electrons during aerobic respiration?

During a fermentation experiment in lab, two different samples of grape juice have been inoculated with yeast.Air has been evacuated from sample I, but not from sample II.In which sample would you predict to the greater alcohol production?

The principle sites of amphibolic interaction occur during

ATP molecules are catalysts that lower the activation energy needed to initiate a reaction.

The formation of citric acid from oxaloacetic acid and an acetyl group begins

Which of the following is not true of the light-dependent reactions of photosynthesis?

Metabolic pathways that regenerate their starting point are called _____ pathways.

Photosynthesis occurs in chloroplasts of prokaryotes.

Many exoenzymes from pathogens are virulence factors.

All of the following occur during the light-independent reactions EXCEPT

Each of the following are denaturing agents except

How many carbon dioxide molecules are produced by the complete aerobic breakdown of one glucose molecule?

A type of cofactor would be

Enzymes that function inside a cell are

In bacterial cells, the electron transport system is located in the

The reactions of fermentation function to regenerate _____ molecules for use in glycolysis.

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

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