Question 1

Glycogen is stored primarily in the liver and the _____ .

Accepted Answer

A)  heart 
B)  pancreas 
C)  muscles 
D)  fat deposits 
A)  heart 
B)  pancreas 
C)  muscles 
D)  fat deposits

Question 2

The net yield of ATP molecules from the complete catabolism of one molecule of glucose is _____ .

Accepted Answer

A)  18 
B)  24 
C)  32 
D)  42 
A)  18 
B)  24 
C)  32 
D)  42

Question 3

The discomfort associate with excess alcohol consumption is due to the buildup of _____ .

Accepted Answer

A)  acetyl CoA 
B)  acetaldehyde 
C)  lactate 
D)  pyruvate 
A)  acetyl CoA 
B)  acetaldehyde 
C)  lactate 
D)  pyruvate

Question 4

In the electron transport chain,FADH2 delivers hydrogen ions and electrons to which of the following?

Accepted Answer

A)  coenzyme Q 
B)  NAD+ 
C)  flavoprotein 
D)  cytochrome b 
A)  coenzyme Q 
B)  NAD+ 
C)  flavoprotein 
D)  cytochrome b

Question 5

Both glucagon and insulin are produced by the pancreas.

Accepted Answer

A) True 
 B)False

Question 6

Insulin is a regulatory enzyme.

Accepted Answer

A) True 
 B)False

Question 7

The only way to prevent lactate accumulation in adults is to limit exercise.

Accepted Answer

A) True 
 B)False

Question 8

As a molecule of glucose passes through the glycolysis pathway,three molecules of pyruvate are formed.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following can be used to fuel the glycolysis pathway?

Accepted Answer

A)  glucose 
B)  glucose and fructose 
C)  fructose and galactose 
D)  glucose,fructose and galactose 
A)  glucose 
B)  glucose and fructose 
C)  fructose and galactose 
D)  glucose,fructose and galactose

Question 10

Which of the following occurs in the citric acid cycle?

Accepted Answer

A)  oxidation of carbon 
B)  generation of ATP 
C)  'pumping' of hydrogen ions 
D)  more than one answer is correct 
A)  oxidation of carbon 
B)  generation of ATP 
C)  'pumping' of hydrogen ions 
D)  more than one answer is correct

Question 11

Insulin decreases the rate of synthesis of glycogen and fatty acids.

Accepted Answer

A) True 
 B)False

Question 12

Glycogenolysis does not occur in muscle tissue because of the absence of the enzyme _____ .

Accepted Answer

A)  glucose 6-phosphatase 
B)  glycogen phosphorylase 
C)  phosphoglucomutase 
D)  pyruvate kinase 
A)  glucose 6-phosphatase 
B)  glycogen phosphorylase 
C)  phosphoglucomutase 
D)  pyruvate kinase

Question 13

A condition in which glucose appears in the urine is called _____ .

Accepted Answer

A)  hypoglycemia 
B)  hyperglycemia 
C)  glucosuria 
D)  galactosemia 
A)  hypoglycemia 
B)  hyperglycemia 
C)  glucosuria 
D)  galactosemia

Question 14

Glucagon can counteract the effect of insulin.

Accepted Answer

A) True 
 B)False

Question 15

The reaction of NAD+ to produce NADH is an example of what type of reaction?

Accepted Answer

A)  oxidation 
B)  reduction 
C)  hydrolysis 
D)  hydration 
A)  oxidation 
B)  reduction 
C)  hydrolysis 
D)  hydration

Question 16

Each turn of the citric acid cycle produces ____ NADH coenzyme(s).

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
A)  0 
B)  1 
C)  2 
D)  3

Question 17

All pyruvate has a similar fate,in that it eventually produces _____ .

Accepted Answer

A)  CO2 
B)  acetyl CoA 
C)  NAD+ 
D)  FAD 
A)  CO2 
B)  acetyl CoA 
C)  NAD+ 
D)  FAD

Question 18

During glycolysis the action of hexokinase is controlled by the concentration of glucose-6-phosphate.The first steps of glycolysis are shown below.   
 This is an example of feedback inhibition.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is an allosteric enzyme which serves as a control point in the citric acid cycle?

Accepted Answer

A)  malate dehydrogenase 
B)  fumarase 
C)  citrate synthetase 
D)  succinate dehydrogenase 
A)  malate dehydrogenase 
B)  fumarase 
C)  citrate synthetase 
D)  succinate dehydrogenase

Question 20

How can a person avoid an "energy crash" one to three hours after a meal?

Accepted Answer

A)  Consume foods with elevated levels of caffeine. 
B)  Increase the time between eating meals. 
C)  Eat meals with a high overall glycemic index. 
D)  Eat meals with a low overall glycemic index. 
A)  Consume foods with elevated levels of caffeine. 
B)  Increase the time between eating meals. 
C)  Eat meals with a high overall glycemic index. 
D)  Eat meals with a low overall glycemic index.

Exam 23: Carbohydrate Metabolism

Glycogen is stored primarily in the liver and the _____ .

The net yield of ATP molecules from the complete catabolism of one molecule of glucose is _____ .

The discomfort associate with excess alcohol consumption is due to the buildup of _____ .

In the electron transport chain,FADH2 delivers hydrogen ions and electrons to which of the following?

Both glucagon and insulin are produced by the pancreas.

Insulin is a regulatory enzyme.

The only way to prevent lactate accumulation in adults is to limit exercise.

As a molecule of glucose passes through the glycolysis pathway,three molecules of pyruvate are formed.

Which of the following can be used to fuel the glycolysis pathway?

Which of the following occurs in the citric acid cycle?

Insulin decreases the rate of synthesis of glycogen and fatty acids.

Glycogenolysis does not occur in muscle tissue because of the absence of the enzyme _____ .

A condition in which glucose appears in the urine is called _____ .

Glucagon can counteract the effect of insulin.

The reaction of NAD+ to produce NADH is an example of what type of reaction?

Each turn of the citric acid cycle produces ____ NADH coenzyme(s).

All pyruvate has a similar fate,in that it eventually produces _____ .

During glycolysis the action of hexokinase is controlled by the concentration of glucose-6-phosphate.The first steps of glycolysis are shown below. This is an example of feedback inhibition.

Which of the following is an allosteric enzyme which serves as a control point in the citric acid cycle?

How can a person avoid an "energy crash" one to three hours after a meal?

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

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Lipid and Amino Acid Metabolism

Body Fluids

Filters

In the electron transport chain,FADH₂ delivers hydrogen ions and electrons to which of the following?

The reaction of NAD⁺ to produce NADH is an example of what type of reaction?