Question 1

Zymogen is another term for cofactor.

Accepted Answer

A) True 
 B)False

Question 2

A neighbor comes to you having just moments ago ingested an unknown amount of antifreeze. You are miles from the nearest hospital. Which of the following is your best course of action after calling 911?

Accepted Answer

A) To make their last moments as pleasant as possible. 
B) Give them enough whiskey to nearly get them intoxicated. 
C) Give them methanol to detoxify the antifreeze. 
D) Do nothing because antifreeze is not toxic to people. 
A) To make their last moments as pleasant as possible. 
B) Give them enough whiskey to nearly get them intoxicated. 
C) Give them methanol to detoxify the antifreeze. 
D) Do nothing because antifreeze is not toxic to people.

Question 3

Which statement about enzymes is incorrect?

Accepted Answer

A) Enzymes can either speed up or slow down a chemical reaction. 
B) Enzymes are not used up during the reaction in which they are involved. 
C) Enzymes are proteins that are capable of reducing the activation energy. 
D) There are enzymes that interact with one enantiomer, but not the other. 
A) Enzymes can either speed up or slow down a chemical reaction. 
B) Enzymes are not used up during the reaction in which they are involved. 
C) Enzymes are proteins that are capable of reducing the activation energy. 
D) There are enzymes that interact with one enantiomer, but not the other.

Question 4

Sulfa drugs prevent bacterial growth by acting as ____ inhibitors.

Accepted Answer

A) competitive 
B) noncompetitive 
C) irreversible 
D) more than one response is correct 
A) competitive 
B) noncompetitive 
C) irreversible 
D) more than one response is correct

Question 5

The cyanide ion is very toxic to humans because it binds with iron (Fe3+)in what enzyme to form a stable complex that stops cellular respiration.

Accepted Answer

A) cytochrome reductase 
B) cytochrome kinase 
C) cytochrome oxidase 
D) elastase 
A) cytochrome reductase 
B) cytochrome kinase 
C) cytochrome oxidase 
D) elastase

Question 6

While most enzymes increase the rate of a reaction by providing a new mechanism with a lower activation energy, there are several examples where they can also increase the activation energy and slow down or stop a reaction.

Accepted Answer

A) True 
 B)False

Question 7

Trypsin is an example of a proenzyme.

Accepted Answer

A) True 
 B)False

Question 8

​ Explain how enzymes play a vital role in eliminating carbon dioxide from the body.

Accepted Answer

Carbon dioxide is a waste product of cel

Question 9

Which of the following disorders results from a deficiency of the enzyme tyroinase?

Accepted Answer

A) Albinism 
B) Galactosemia 
C) Phenylketonuria 
D) Homocystinuria 
A) Albinism 
B) Galactosemia 
C) Phenylketonuria 
D) Homocystinuria

Question 10

An enzyme valuable in diagnosing heart attacks is _____ .

Accepted Answer

A) LDH 
B) GPT 
C) lipase 
D) lysozyme 
A) LDH 
B) GPT 
C) lipase 
D) lysozyme

Question 11

What is the reason for performing an enzyme assay?

Accepted Answer

A) to determine the number of enzyme molecules per liter 
B) to determine the number of enzyme molecules per mL 
C) to determine the activity of an enzyme 
D) to determine the number of enzymes present 
A) to determine the number of enzyme molecules per liter 
B) to determine the number of enzyme molecules per mL 
C) to determine the activity of an enzyme 
D) to determine the number of enzymes present

Question 12

Substances that can bind to an enzyme and increase its activity are called

Accepted Answer

A) positive modulators. 
B) negative modulators. 
C) allosteric regulators. 
D) positive regulators. 
A) positive modulators. 
B) negative modulators. 
C) allosteric regulators. 
D) positive regulators.

Question 13

The catalytically inactive form of an enzyme is called a(n)_____ .

Accepted Answer

A) cofactor 
B) proenzyme 
C) apoenzyme 
D) activator 
A) cofactor 
B) proenzyme 
C) apoenzyme 
D) activator

Question 14

Which of the following describes the significance of the term Vmax ?

Accepted Answer

A) how rapidly a substrate molecule can travel to an enzyme 
B) the maximum rate that an enzyme can process substrate species 
C) the velocity at which the enzyme and substrate must collide for activation 
D) the maximum speed at which product molecules leave the binding site. 
A) how rapidly a substrate molecule can travel to an enzyme 
B) the maximum rate that an enzyme can process substrate species 
C) the velocity at which the enzyme and substrate must collide for activation 
D) the maximum speed at which product molecules leave the binding site.

Zymogen is another term for cofactor.

A neighbor comes to you having just moments ago ingested an unknown amount of antifreeze. You are miles from the nearest hospital. Which of the following is your best course of action after calling 911?

Which statement about enzymes is incorrect?

Sulfa drugs prevent bacterial growth by acting as ____ inhibitors.

The cyanide ion is very toxic to humans because it binds with iron (Fe³⁺)in what enzyme to form a stable complex that stops cellular respiration.

While most enzymes increase the rate of a reaction by providing a new mechanism with a lower activation energy, there are several examples where they can also increase the activation energy and slow down or stop a reaction.

Trypsin is an example of a proenzyme.

Explain how enzymes play a vital role in eliminating carbon dioxide from the body.

Which of the following disorders results from a deficiency of the enzyme tyroinase?

An enzyme valuable in diagnosing heart attacks is _____ .

What is the reason for performing an enzyme assay?

Substances that can bind to an enzyme and increase its activity are called

The catalytically inactive form of an enzyme is called a(n)_____ .

Which of the following describes the significance of the term V_max ?

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, Bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Exam 20: Enzymes

Zymogen is another term for cofactor.

A neighbor comes to you having just moments ago ingested an unknown amount of antifreeze. You are miles from the nearest hospital. Which of the following is your best course of action after calling 911?

Which statement about enzymes is incorrect?

Sulfa drugs prevent bacterial growth by acting as ____ inhibitors.

The cyanide ion is very toxic to humans because it binds with iron (Fe3+)in what enzyme to form a stable complex that stops cellular respiration.

While most enzymes increase the rate of a reaction by providing a new mechanism with a lower activation energy, there are several examples where they can also increase the activation energy and slow down or stop a reaction.

Trypsin is an example of a proenzyme.

​ Explain how enzymes play a vital role in eliminating carbon dioxide from the body.

Which of the following disorders results from a deficiency of the enzyme tyroinase?

An enzyme valuable in diagnosing heart attacks is _____ .

What is the reason for performing an enzyme assay?

Substances that can bind to an enzyme and increase its activity are called

The catalytically inactive form of an enzyme is called a(n)_____ .

Which of the following describes the significance of the term Vmax ?

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, Bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

The cyanide ion is very toxic to humans because it binds with iron (Fe³⁺)in what enzyme to form a stable complex that stops cellular respiration.

Explain how enzymes play a vital role in eliminating carbon dioxide from the body.

Which of the following describes the significance of the term V_max ?