Question 1

The location where a substrate fits into an enzyme is known as the

Accepted Answer

A) Cofactor site 
B) Plebi site 
C) Polar site 
D) Active site 
E) Carrier site 
A) Cofactor site 
B) Plebi site 
C) Polar site 
D) Active site 
E) Carrier site D

Question 2

Which is an example of a phosphorylation reaction?

Accepted Answer

A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose 
A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose E

Question 3

Which of the following is not a characteristic of the Krebs cycle?

Accepted Answer

A) Aerobic metabolism 
B) Conversion of pyruvate to acetaldehyde 
C) Transfer of electrons to NAD+ and FAD 
D) Oxidation of acetyl-coA to CO2 
E) Net production of 1 ATP per one turn of the cycle 
A) Aerobic metabolism 
B) Conversion of pyruvate to acetaldehyde 
C) Transfer of electrons to NAD+ and FAD 
D) Oxidation of acetyl-coA to CO2 
E) Net production of 1 ATP per one turn of the cycle B

Question 4

Microorganisms possessing metabolic pathways that can function in the presence or absence of oxygen are described as

Accepted Answer

A) Obligate anaerobes 
B) Anabolic respirers 
C) Facultative anaerobes 
D) Catabolic anaerobes 
E) None of the above 
A) Obligate anaerobes 
B) Anabolic respirers 
C) Facultative anaerobes 
D) Catabolic anaerobes 
E) None of the above

Question 5

The mechanism of competitive inhibition involves

Accepted Answer

A) Inhibiting the first enzyme in a metabolic pathway 
B) Decreasing the pH and denaturing the enzyme 
C) Increasing the energy of activation of a chemical reaction 
D) Binding to an enzyme at the active site 
E) Binding to a site distant from the active site and causing a conformational change of the enzyme 
A) Inhibiting the first enzyme in a metabolic pathway 
B) Decreasing the pH and denaturing the enzyme 
C) Increasing the energy of activation of a chemical reaction 
D) Binding to an enzyme at the active site 
E) Binding to a site distant from the active site and causing a conformational change of the enzyme

Question 6

Which of the following is a common feature of most fermentation pathways?

Accepted Answer

A) The production of glucose 
B) The formation of lactic acid 
C) The provision of electrons by NADH 
D) The use of the Krebs cycle 
E) The conversion of pyruvate to acetyl CoA 
A) The production of glucose 
B) The formation of lactic acid 
C) The provision of electrons by NADH 
D) The use of the Krebs cycle 
E) The conversion of pyruvate to acetyl CoA

Question 7

Which is an example of an oxidation reaction?

Accepted Answer

A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose 
A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose

Question 8

Which of the following statements regarding enzymes is false?

Accepted Answer

A) Enzymes increase the rate of a chemical reaction 
B) The amount of energy required or released when a substrate is converted to a product is known as the allosteric energy 
C) Enzymes lower the energy of activation 
D) Enzymes are not changed by the reactions in which they participate 
E) A chemical reaction will occur only if there is sufficient activation energy to initiate the reaction 
A) Enzymes increase the rate of a chemical reaction 
B) The amount of energy required or released when a substrate is converted to a product is known as the allosteric energy 
C) Enzymes lower the energy of activation 
D) Enzymes are not changed by the reactions in which they participate 
E) A chemical reaction will occur only if there is sufficient activation energy to initiate the reaction

Question 9

Which is an example of a dehydration reaction?

Accepted Answer

A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose 
A) Amino acids to protein 
B) DPN to DPNH 
C) DPNH to DPN 
D) Glycogen to glucose 
E) Glucose to phosphoglucose

Question 10

Why is regulation of enzyme activity of fundamental importance in biological systems?

Accepted Answer

Enzyme regulation is necessary to avoid

Question 11

_____ can be inorganic,whereas _____ is always organic.

Accepted Answer

A) An enzyme; an allosteric inhibitor 
B) A substrate; a product 
C) FAD; NAD? 
D) An oxidation reaction; a reduction reaction 
E) A cofactor; a coenzyme 
A) An enzyme; an allosteric inhibitor 
B) A substrate; a product 
C) FAD; NAD? 
D) An oxidation reaction; a reduction reaction 
E) A cofactor; a coenzyme

Question 12

Which of the following statements regarding eukaryotic electron transport is true?

Accepted Answer

A) Electron transport occurs in the cytoplasm 
B) A consequence of electron transport is the formation of a concentration gradient of protons 
C) Generates a concentration gradient of electrons 
D) NADH and FADH2 are reduced during electron transport 
A) Electron transport occurs in the cytoplasm 
B) A consequence of electron transport is the formation of a concentration gradient of protons 
C) Generates a concentration gradient of electrons 
D) NADH and FADH2 are reduced during electron transport

Question 13

Use the figure below to answer the following questions.
  
-In the figure which step indicates the molecules produced by dehydration?

Accepted Answer

The answer of Use the figure below to answer the...

Question 14

In a mitochondrion carrying out electron transport,the proton concentration gradient develops

Accepted Answer

A) Across the inner mitochondrial membrane 
B) In the cytosol 
C) In the nucleus 
D) In the space between the outer membrane and the plasma membrane 
E) Across the outer mitochondrial membrane 
A) Across the inner mitochondrial membrane 
B) In the cytosol 
C) In the nucleus 
D) In the space between the outer membrane and the plasma membrane 
E) Across the outer mitochondrial membrane

Question 15

Which of the following is not a characteristic of glycolysis?

Accepted Answer

A) Anaerobic metabolism 
B) Substrate-level phosphorylation 
C) Net production of 2 ATP 
D) Glucose is oxidized to 2 pyruvate molecules 
E) Takes place on microbial cell membranes or on the inner membrane of the mitochondrion 
A) Anaerobic metabolism 
B) Substrate-level phosphorylation 
C) Net production of 2 ATP 
D) Glucose is oxidized to 2 pyruvate molecules 
E) Takes place on microbial cell membranes or on the inner membrane of the mitochondrion

Question 16

Explain why anabolism is important during the replication of bacteria during an infection.

Accepted Answer

When bacteria replicate,anabolism is req

Question 17

Why are pharmaceutical industries interested in enzyme inhibition?

Accepted Answer

Many pharmaceutical industries have an i

Question 18

Cellular respiration can be anaerobic.

Accepted Answer

A) True 
 B)False

Question 19

An allosteric inhibitor is added to an enzyme substrate mixture.What is likely to happen?

Accepted Answer

A) The product of the reaction will increase 
B) The enzyme will denature 
C) The inhibitor will bind the active site of an enzyme and interfere with substrate binding 
D) The inhibitor will bind to a site other than the active site and cause a conformational change of the enzyme 
A) The product of the reaction will increase 
B) The enzyme will denature 
C) The inhibitor will bind the active site of an enzyme and interfere with substrate binding 
D) The inhibitor will bind to a site other than the active site and cause a conformational change of the enzyme

Question 20

Enzymes catalyze reactions when they increase the energy of activation of the reaction.

Accepted Answer

A) True 
 B)False

Exam 3: Essentials of Metabolism

The location where a substrate fits into an enzyme is known as the

Which is an example of a phosphorylation reaction?

Which of the following is not a characteristic of the Krebs cycle?

Microorganisms possessing metabolic pathways that can function in the presence or absence of oxygen are described as

The mechanism of competitive inhibition involves

Which of the following is a common feature of most fermentation pathways?

Which is an example of an oxidation reaction?

Which of the following statements regarding enzymes is false?

Which is an example of a dehydration reaction?

Why is regulation of enzyme activity of fundamental importance in biological systems?

_____ can be inorganic,whereas _____ is always organic.

Which of the following statements regarding eukaryotic electron transport is true?

Use the figure below to answer the following questions. -In the figure which step indicates the molecules produced by dehydration?

In a mitochondrion carrying out electron transport,the proton concentration gradient develops

Which of the following is not a characteristic of glycolysis?

Explain why anabolism is important during the replication of bacteria during an infection.

Why are pharmaceutical industries interested in enzyme inhibition?

Cellular respiration can be anaerobic.

An allosteric inhibitor is added to an enzyme substrate mixture.What is likely to happen?

Enzymes catalyze reactions when they increase the energy of activation of the reaction.

What is Microbiology and Why Does it Matter?

Fundamental Chemistry for Microbiology

An Introduction to Cell Structure and Host-Pathogen Relationships

Requirements for Infection

Transmission of Infection, the Compromised Host, Epidemiology, and Diagnosing Infections

Principles of Disease

Emerging and Re-Emerging Infectious Disease

The Clinical Significance of Bacterial Anatomy

Bacterial Growth

Microbial Genetics and Infectious Disease

The Structure and Infection Cycle of Viruses

Viral Infection

Parasitic and Fungal Infections

The Innate Immune Response

The Adaptive Immune Response

Failures of the Immune Response

Control of Microbial Growth with Disinfectants and Antiseptics

Antibiotics and Antimicrobial Drugs

Antibiotic Resistance

Infections of the Respiratory System

Infections of the Digestive System

Infections of the Genitourinary System

Infections of the Central Nervous System

Infections of the Blood and Lymph

Infections of the Skin and Eyes

Filters

_ can be inorganic,whereas _ is always organic.