Question 1

The pathway followed by glucose when energy is needed is

Accepted Answer

A) gluconeogenesis. 
B) glycogenesis. 
C) glycolysis. 
D) lipogenesis. 
E) the pentose phosphate pathway. 
A) gluconeogenesis. 
B) glycogenesis. 
C) glycolysis. 
D) lipogenesis. 
E) the pentose phosphate pathway.

Question 2

Gluconeogenesis occurs mainly in the

Accepted Answer

A) cytosol of all cells. 
B) mitochondria of all cells. 
C) muscle. 
D) liver. 
E) brain. 
A) cytosol of all cells. 
B) mitochondria of all cells. 
C) muscle. 
D) liver. 
E) brain.

Question 3

Which of the following carbohydrates can also be used as fuel in glycolysis?

Accepted Answer

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

Question 4

Overproduction of insulin causes ________,a state in which the concentration of blood sugar is ________ than normal.

Accepted Answer

A) hypoglycemia; lower 
B) hypoglycemia; higher 
C) hyperglycemia; lower 
D) hyperglycemia; higher 
E) none of the above 
A) hypoglycemia; lower 
B) hypoglycemia; higher 
C) hyperglycemia; lower 
D) hyperglycemia; higher 
E) none of the above

Question 5

Hormones which regulate glucose metabolism are ________,________,and ________.

Accepted Answer

A) insulin; cortisone; thyroxine 
B) insulin; glucagon; epinephrine 
C) estrogen; progesterone; testosterone 
D) growth hormone; cortisone; thyroxine 
E) estrogen; glucagon; epinephrine 
A) insulin; cortisone; thyroxine 
B) insulin; glucagon; epinephrine 
C) estrogen; progesterone; testosterone 
D) growth hormone; cortisone; thyroxine 
E) estrogen; glucagon; epinephrine

Question 6

All of the following are reactions in the oxidation of glucose which produce energy except

Accepted Answer

A) glycolysis. 
B) glycogenolysis. 
C) oxidation of pyruvate to acetyl-SCoA. 
D) the citric acid cycle. 
E) reaction of reduced coenzymes in the electron transport chain. 
A) glycolysis. 
B) glycogenolysis. 
C) oxidation of pyruvate to acetyl-SCoA. 
D) the citric acid cycle. 
E) reaction of reduced coenzymes in the electron transport chain.

Question 7

During gluconeogenesis pyruvate is formed from glycerol,certain amino acids and _________.

Accepted Answer

A) acetyl CoA 
B) glucose 
C) lactate 
D) glycogen 
A) acetyl CoA 
B) glucose 
C) lactate 
D) glycogen

Question 8

Classify each pathway of carbohydrate metabolism as anabolic or catabolic.Justify your choice in each case.

Accepted Answer

Glycolysis is catabolic,because a large

Question 9

When a cell's need for NADPH or ribose-6-phosphate exceeds its need for ATP,glucose-6-phosphate is metabolized by

Accepted Answer

A) gluconeogenesis. 
B) glycogenesis. 
C) glycolysis. 
D) glycogenolysis. 
E) the pentose phosphate pathway. 
A) gluconeogenesis. 
B) glycogenesis. 
C) glycolysis. 
D) glycogenolysis. 
E) the pentose phosphate pathway.

Question 10

Glycogenolysis can be correctly represented by which of the following pathways?

Accepted Answer

A) glucose → glycogen 
B) glycogen → glucose 
C) pyruvate → glycogen 
D) glycogen → pyruvate 
E) glucose → pyruvate 
A) glucose → glycogen 
B) glycogen → glucose 
C) pyruvate → glycogen 
D) glycogen → pyruvate 
E) glucose → pyruvate

Question 11

All of the following statements concerning digestion are correct except

Accepted Answer

A) digestion can be considered a catabolic process in which bulk food is broken down into individual small molecules. 
B) the major chemical reaction in digestion is enzyme-catalyzed hydrolysis of large molecules. 
C) the major physical processes in digestion are mixing,softening and grinding of food. 
D) digestion begins in the stomach and is completed in the large intestine. 
E) different foods are digested by different enzymes. 
A) digestion can be considered a catabolic process in which bulk food is broken down into individual small molecules. 
B) the major chemical reaction in digestion is enzyme-catalyzed hydrolysis of large molecules. 
C) the major physical processes in digestion are mixing,softening and grinding of food. 
D) digestion begins in the stomach and is completed in the large intestine. 
E) different foods are digested by different enzymes.

Question 12

Insulin increases the rate at which

Accepted Answer

A) glucose is converted to glycogen. 
B) glucose is converted to fat. 
C) glucose enters the cell. 
D) glucose is converted from glycogen. 
E) More than one response is correct. 
A) glucose is converted to glycogen. 
B) glucose is converted to fat. 
C) glucose enters the cell. 
D) glucose is converted from glycogen. 
E) More than one response is correct.

Question 13

Which of the following is not used as an energy source in metabolism?

Accepted Answer

A) ATP 
B) UTP 
C) UTC 
D) GTP 
E) More than one choice is correct. 
A) ATP 
B) UTP 
C) UTC 
D) GTP 
E) More than one choice is correct.

Question 14

The major function of the pentose phosphate pathway when energy for anabolic reactions is a priority is

Accepted Answer

A) producing NADPH. 
B) producing ribose. 
C) meeting the need for large amounts of ATP. 
D) providing intermediates for the citric acid cycle. 
E) providing intermediates for glycogenesis. 
A) producing NADPH. 
B) producing ribose. 
C) meeting the need for large amounts of ATP. 
D) providing intermediates for the citric acid cycle. 
E) providing intermediates for glycogenesis.

Question 15

The diseases identified as diabetes are primarily associated with a malfunction of the hormone

Accepted Answer

A) glucagon. 
B) insulin. 
C) epinephrine. 
D) cortisone. 
E) sorbitol. 
A) glucagon. 
B) insulin. 
C) epinephrine. 
D) cortisone. 
E) sorbitol.

Question 16

All of the chemicals below are associated with the pentose phosphate pathway except

Accepted Answer

A) glucose 6-phosphate. 
B) NADPH. 
C) ribose. 
D) pyruvate. 
E) NADP. 
A) glucose 6-phosphate. 
B) NADPH. 
C) ribose. 
D) pyruvate. 
E) NADP.

Question 17

Steps 1-5 of glycolysis are referred to as the "energy investment" portion of the process because these steps

Accepted Answer

A) consume ATP instead of producing it. 
B) generate waste products which cost ATP for disposal. 
C) produce NADH which is less energy-rich than ATP. 
D) involve several endergonic isomerizations. 
E) none of the above 
A) consume ATP instead of producing it. 
B) generate waste products which cost ATP for disposal. 
C) produce NADH which is less energy-rich than ATP. 
D) involve several endergonic isomerizations. 
E) none of the above

Question 18

When ATP is produced by direct transfer of a phosphate group instead of from reactions coupled to electron transport,the process is referred to as ________ phosphorylation.

Accepted Answer

A) oxidative 
B) substrate-level 
C) reductive 
D) anabolic 
E) catabolic 
A) oxidative 
B) substrate-level 
C) reductive 
D) anabolic 
E) catabolic

Question 19

Which of the following are produced as a net result of glycolysis?
I.NADH
II.NAD+
III.ADP
IV.ATP

Accepted Answer

A) I and II 
B) III and IV 
C) I and III 
D) I and IV 
E) II and III 
A) I and II 
B) III and IV 
C) I and III 
D) I and IV 
E) II and III

Question 20

Which pathway converts glucose to its storage form in animals?

Accepted Answer

A) glycolysis 
B) glycogenolysis 
C) gluconeogenesis 
D) glycogenesis 
E) lipogenesis 
A) glycolysis 
B) glycogenolysis 
C) gluconeogenesis 
D) glycogenesis 
E) lipogenesis

Exam 22: Carbohydrate Metabolism

The pathway followed by glucose when energy is needed is

Gluconeogenesis occurs mainly in the

Which of the following carbohydrates can also be used as fuel in glycolysis?

Overproduction of insulin causes ________,a state in which the concentration of blood sugar is ________ than normal.

Hormones which regulate glucose metabolism are ________,________,and ________.

All of the following are reactions in the oxidation of glucose which produce energy except

During gluconeogenesis pyruvate is formed from glycerol,certain amino acids and _________.

Classify each pathway of carbohydrate metabolism as anabolic or catabolic.Justify your choice in each case.

When a cell's need for NADPH or ribose-6-phosphate exceeds its need for ATP,glucose-6-phosphate is metabolized by

Glycogenolysis can be correctly represented by which of the following pathways?

All of the following statements concerning digestion are correct except

Insulin increases the rate at which

Which of the following is not used as an energy source in metabolism?

The major function of the pentose phosphate pathway when energy for anabolic reactions is a priority is

The diseases identified as diabetes are primarily associated with a malfunction of the hormone

All of the chemicals below are associated with the pentose phosphate pathway except

Steps 1-5 of glycolysis are referred to as the "energy investment" portion of the process because these steps

When ATP is produced by direct transfer of a phosphate group instead of from reactions coupled to electron transport,the process is referred to as ________ phosphorylation.

Which of the following are produced as a net result of glycolysis? I.NADH II.NAD+ III.ADP IV.ATP

Which pathway converts glucose to its storage form in animals?

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

Overproduction of insulin causes ,a state in which the concentration of blood sugar is than normal.

Hormones which regulate glucose metabolism are ,,and .

Which of the following are produced as a net result of glycolysis? I.NADH II.NAD⁺ III.ADP IV.ATP