Question 1

Glycerol that is liberated from fats is digested by passing through glycolysis.

Accepted Answer

A) True 
 B)False

Question 2

Consider the diagram of a mitochondrion shown below.Which of the numbered locations is where $\beta$-oxidation occurs?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 3

Transaminases play a role in amino acid synthesis as well as in nitrogen disposal.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is a ketone body?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 5

The accumulation of ketone bodies in the blood is termed _____ .

Accepted Answer

A) acidosis 
B) alkalosis 
C) ketonuria 
D) ketonemia 
A) acidosis 
B) alkalosis 
C) ketonuria 
D) ketonemia

Question 6

More amino acids can be synthesized from intermediates of the citric acid cycle than glycolysis intermediates.

Accepted Answer

A) True 
 B)False

Question 7

Consider the simplified diagram of the urea cycle shown below.Which species,numbered 1 through 4,is synthesized in the mitochondria?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 8

Ketosis results from

Accepted Answer

A) underproduction of ketone bodies. 
B) consumption of too much sugar. 
C) overproduction of acetyl CoA. 
D) underproduction of acetyl CoA. 
A) underproduction of ketone bodies. 
B) consumption of too much sugar. 
C) overproduction of acetyl CoA. 
D) underproduction of acetyl CoA.

Question 9

Complete $\beta$-oxidation of a 12-carbon fatty acid produces ____ molecules of FADH2.

Accepted Answer

A) 5 
B) 6 
C) 8 
D) 12 
A) 5 
B) 6 
C) 8 
D) 12

Question 10

The amino acid pool is the total cellular supply of

Accepted Answer

A) amino acids. 
B) dipeptides that yield amino acids. 
C) proteins that yield amino acids. 
D) More than one response is correct. 
A) amino acids. 
B) dipeptides that yield amino acids. 
C) proteins that yield amino acids. 
D) More than one response is correct.

Question 11

Which of the following ketone bodies can not be used as an energy source?

Accepted Answer

A) "$\beta$-hydroxybutyrate" 
B) "acetone" 
C) "acetoacetate" 
D) "All ketone bodies can be used." 
A) "$\beta$-hydroxybutyrate" 
B) "acetone" 
C) "acetoacetate" 
D) "All ketone bodies can be used."

Question 12

Two key amino acids in the catabolism of nitrogen atoms in amino acids are

Accepted Answer

A) aspartate and phenylalanine. 
B) aspartate and glutamate. 
C) glutamate and serine. 
D) valine and alanine. 
A) aspartate and phenylalanine. 
B) aspartate and glutamate. 
C) glutamate and serine. 
D) valine and alanine.

Question 13

The synthesis of fatty acids

Accepted Answer

A) takes place by simply the reverse reactions of the fatty acid spiral. 
B) takes place in the same location within a cell as the fatty acid spiral. 
C) takes place by different reactions than the reverse of the fatty acid spiral and in a different cellular location. 
D) More than one response is correct. 
A) takes place by simply the reverse reactions of the fatty acid spiral. 
B) takes place in the same location within a cell as the fatty acid spiral. 
C) takes place by different reactions than the reverse of the fatty acid spiral and in a different cellular location. 
D) More than one response is correct.

Question 14

Fatty acids and monoglycerides are liberated in the intestinal tract.There are triglycerides in the blood.What is the site of the triglyceride re-synthesis?

Accepted Answer

A) within the circulatory system 
B) within the cells of the intestinal mucosa 
C) just before absorption by cells 
D) in the cytoplasm of the body cells 
A) within the circulatory system 
B) within the cells of the intestinal mucosa 
C) just before absorption by cells 
D) in the cytoplasm of the body cells

Question 15

The entire urea cycle occurs within the matrix of the mitochondria.

Accepted Answer

A) True 
 B)False

Question 16

Nuts and seeds are considered beneficial for the brain since they contain monounsaturated fat and vitamin E.

Accepted Answer

A) True 
 B)False

Question 17

The plasma lipids usually reach a maximum ____ after a meal containing fat is consumed.

Accepted Answer

A) 4-6 hours 
B) 20-30 minutes 
C) 8-10 hours 
D) 2-3 days 
A) 4-6 hours 
B) 20-30 minutes 
C) 8-10 hours 
D) 2-3 days

Question 18

The first step of the fatty acid spiral is a dehydrogenation requiring which coenzyme?

Accepted Answer

A) Coenzyme A 
B) FAD 
C) NAD+ 
D) NADP+ 
A) Coenzyme A 
B) FAD 
C) NAD+ 
D) NADP+

Question 19

The most important function of amino acids (in terms of amount used)is for the synthesis of

Accepted Answer

A) body proteins. 
B) glucose. 
C) pyruvate for energy production. 
D) purines and pyrimidines. 
A) body proteins. 
B) glucose. 
C) pyruvate for energy production. 
D) purines and pyrimidines.

Question 20

Glucogenic amino acids can be converted into _____ .

Accepted Answer

A) acetyl-CoA. 
B) glucose. 
C) fatty acids. 
D) ketone bodies. 
A) acetyl-CoA. 
B) glucose. 
C) fatty acids. 
D) ketone bodies.

Exam 24: Lipid and Amino Acid Metabolism

Glycerol that is liberated from fats is digested by passing through glycolysis.

Consider the diagram of a mitochondrion shown below.Which of the numbered locations is where β\betaβ -oxidation occurs?

Transaminases play a role in amino acid synthesis as well as in nitrogen disposal.

Which of the following is a ketone body?

The accumulation of ketone bodies in the blood is termed _____ .

More amino acids can be synthesized from intermediates of the citric acid cycle than glycolysis intermediates.

Consider the simplified diagram of the urea cycle shown below.Which species,numbered 1 through 4,is synthesized in the mitochondria?

Ketosis results from

Complete β\betaβ -oxidation of a 12-carbon fatty acid produces ____ molecules of FADH2.

The amino acid pool is the total cellular supply of

Which of the following ketone bodies can not be used as an energy source?

Two key amino acids in the catabolism of nitrogen atoms in amino acids are

The synthesis of fatty acids

Fatty acids and monoglycerides are liberated in the intestinal tract.There are triglycerides in the blood.What is the site of the triglyceride re-synthesis?

The entire urea cycle occurs within the matrix of the mitochondria.

Nuts and seeds are considered beneficial for the brain since they contain monounsaturated fat and vitamin E.

The plasma lipids usually reach a maximum ____ after a meal containing fat is consumed.

The first step of the fatty acid spiral is a dehydrogenation requiring which coenzyme?

The most important function of amino acids (in terms of amount used)is for the synthesis of

Glucogenic amino acids can be converted into _____ .

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

Carbohydrate Metabolism

Body Fluids

Filters

Consider the diagram of a mitochondrion shown below.Which of the numbered locations is where $\beta$ -oxidation occurs? $Consider the diagram of a mitochondrion shown below.Which of the numbered locations is where \beta -oxidation occurs?$

Complete $\beta$ -oxidation of a 12-carbon fatty acid produces ____ molecules of FADH₂.