Question 1

Amino acids of the amino acid pool can be supplied by

Accepted Answer

A) dietary amino acids. 
B) the breakdown of tissue proteins. 
C) synthesis of nonessential amino acids. 
D) More than one response is correct. 
A) dietary amino acids. 
B) the breakdown of tissue proteins. 
C) synthesis of nonessential amino acids. 
D) More than one response is correct. D

Question 2

Ketogenic amino acids cannot be converted into _____ .

Accepted Answer

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

Question 3

Amino acids which can be synthesized within the body are termed ____ amino acids.

Accepted Answer

A) glycogenic 
B) ketogenic 
C) essential 
D) nonessential 
A) glycogenic 
B) ketogenic 
C) essential 
D) nonessential D

Question 4

Which of the following types of proteins tend to have the lowest turnover rate?

Accepted Answer

A) liver proteins 
B) plasma proteins 
C) collagens 
D) muscle proteins 
A) liver proteins 
B) plasma proteins 
C) collagens 
D) muscle proteins

Question 5

Given the chance, a few long exercise periods will burn off more fat than will many short periods.

Accepted Answer

A) True 
 B)False

Question 6

The synthesis of amino acids and the intake of amino acids are both important in order to replace cells lost from cellular death caused by either old age of the cells or disease.

Accepted Answer

A) True 
 B)False

Question 7

Which statement is correct when considering fatty acids?

Accepted Answer

A) Nearly all of the fatty acids yield more energy than does glucose. 
B) Fatty acids are long chain acids. 
C) Fatty acids get into the cell by means of active transport across cell membranes. 
D) There is more than one correct response. 
A) Nearly all of the fatty acids yield more energy than does glucose. 
B) Fatty acids are long chain acids. 
C) Fatty acids get into the cell by means of active transport across cell membranes. 
D) There is more than one correct response.

Question 8

Amino acids that are degraded into ____ are termed glucogenic amino acids.

Accepted Answer

A) acetyl CoA 
B) acetoacetyl CoA 
C) pyruvate 
D) aspartate 
A) acetyl CoA 
B) acetoacetyl CoA 
C) pyruvate 
D) aspartate

Question 9

The processes of fatty acid degradation and fatty acid synthesis are the chemical reverse of each other and respond to stress as predicted by Le Châtelier's principle.

Accepted Answer

A) True 
 B)False

Question 10

The liver is the most important site for the biosynthesis of fatty acids and triglycerides.

Accepted Answer

A) True 
 B)False

Question 11

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 12

Which of the following is the nitrogen-containing product of the urea cycle?

Accepted Answer

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

Question 13

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

Accepted Answer

A) β -hydroxybutyrate 
B) acetone 
C) acetoacetate 
D) All ketone bodies can be used. 
A) β -hydroxybutyrate 
B) acetone 
C) acetoacetate 
D) All ketone bodies can be used.

Question 14

Which of the following statements is correct with reference to cholesterol?

Accepted Answer

A) Cholesterol is a lipid that can be found in the blood. 
B) Cholesterol is not soluble and water and will precipitate out of the blood 
C) Cholesterol is important in the formation of cell membranes. 
D) All of these responses are correct. 
A) Cholesterol is a lipid that can be found in the blood. 
B) Cholesterol is not soluble and water and will precipitate out of the blood 
C) Cholesterol is important in the formation of cell membranes. 
D) All of these responses are correct.

Question 15

Consider the reaction below.  Which of the following substances should be placed by the labels 1 and 2, respectively?

Accepted Answer

A) 1: ATP and 2: ADP + Pi 
B) 1: ATP and 2: AMP + PiPi 
C) 1: NAD+ and 2: NADH + H+ 
D) 1: FAD and 2:  FADH2 
A) 1: ATP and 2: ADP + Pi 
B) 1: ATP and 2: AMP + PiPi 
C) 1: NAD+ and 2: NADH + H+ 
D) 1: FAD and 2:  FADH2

Question 16

Chylomicrons are aggregates of triglycerides, phosphoglycerides, and cholesterol complexed with proteins.

Accepted Answer

A) True 
 B)False

Question 17

Once the amino group is removed from an amino acid, the carbon skeleton is passed into the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 18

Oxidation of a 12-carbon fatty acid produces ____ molecules of acetyl-CoA.

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 12 
A) 2 
B) 4 
C) 6 
D) 12

Question 19

A chylomicron is a type of lipoprotein, produced from using fat in digested food.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 24: Lipid and Amino Acid Metabolism

Amino acids of the amino acid pool can be supplied by

Ketogenic amino acids cannot be converted into _____ .

Amino acids which can be synthesized within the body are termed ____ amino acids.

Which of the following types of proteins tend to have the lowest turnover rate?

Given the chance, a few long exercise periods will burn off more fat than will many short periods.

The synthesis of amino acids and the intake of amino acids are both important in order to replace cells lost from cellular death caused by either old age of the cells or disease.

Which statement is correct when considering fatty acids?

Amino acids that are degraded into ____ are termed glucogenic amino acids.

The processes of fatty acid degradation and fatty acid synthesis are the chemical reverse of each other and respond to stress as predicted by Le Châtelier's principle.

The liver is the most important site for the biosynthesis of fatty acids and triglycerides.

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

Which of the following is the nitrogen-containing product of the urea cycle?

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

Which of the following statements is correct with reference to cholesterol?

Consider the reaction below. Which of the following substances should be placed by the labels 1 and 2, respectively?

Chylomicrons are aggregates of triglycerides, phosphoglycerides, and cholesterol complexed with proteins.

Once the amino group is removed from an amino acid, the carbon skeleton is passed into the citric acid cycle.

Oxidation of a 12-carbon fatty acid produces ____ molecules of acetyl-CoA.

A chylomicron is a type of lipoprotein, produced from using fat in digested food.

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

Matter, Measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

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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

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