Question 1

What hydrolysis product of fats is converted into glyceraldehyde-3-phosphate so that it may enter the glycolysis pathway?

Accepted Answer

A) glucose 
B) glycerol 
C) fructose 
D) amino acids 
E) ethanol 
A) glucose 
B) glycerol 
C) fructose 
D) amino acids 
E) ethanol

Question 2

Glycogenesis occurs under which of the following conditions?

Accepted Answer

A) when digestion of polysaccharides provides high levels of blood glucose 
B) when blood glucose levels are low 
C) when blood glucose is completely depleted due to strenuous exercise 
D) when epinephrine is released from the adrenal glands 
E) when glucose is needed for energy by the brain and muscles 
A) when digestion of polysaccharides provides high levels of blood glucose 
B) when blood glucose levels are low 
C) when blood glucose is completely depleted due to strenuous exercise 
D) when epinephrine is released from the adrenal glands 
E) when glucose is needed for energy by the brain and muscles

Question 3

The abbreviated form of the equation for the hydrolysis of ATP is shown below.What is the missing product in this reaction? ATP → ADP + ? + 7 kcal/mol

Accepted Answer

A) AMP 
B) water 
C) an inorganic phosphate group or Pi 
D) NAD+ 
E) energy 
A) AMP 
B) water 
C) an inorganic phosphate group or Pi 
D) NAD+ 
E) energy

Question 4

Which of the statements concerning gluconeogenesis is FALSE?

Accepted Answer

A) Gluconeogenesis is the process by which glucose is synthesized from carbon atoms from noncarbohydrate sources. 
B) Gluconeogenesis is a pathway that protects the brain and red blood cells from experiencing a loss of glucose. 
C) The gluconeogenesis pathway is the reverse of glycolysis. 
D) Gluconeogenesis is a pathway that is utilized when vigorous activity depletes blood glucose and glycogen stores. 
E) The level of carbohydrate available from the diet controls gluconeogenesis; the gluconeogenesis pathway is active for a diet low in carbohydrates, and inactive for a diet high in carbohydrates. 
A) Gluconeogenesis is the process by which glucose is synthesized from carbon atoms from noncarbohydrate sources. 
B) Gluconeogenesis is a pathway that protects the brain and red blood cells from experiencing a loss of glucose. 
C) The gluconeogenesis pathway is the reverse of glycolysis. 
D) Gluconeogenesis is a pathway that is utilized when vigorous activity depletes blood glucose and glycogen stores. 
E) The level of carbohydrate available from the diet controls gluconeogenesis; the gluconeogenesis pathway is active for a diet low in carbohydrates, and inactive for a diet high in carbohydrates.

Question 5

The abbreviated form of the equation for the first reaction of glycolysis is shown below.What is the missing product in this reaction? glucose + Pi + 3 kcal/mol → water + ?

Accepted Answer

A) ATP 
B) glucose-6-phosphate 
C) an inorganic phosphate group 
D) hexokinase 
E) glucose triphosphate 
A) ATP 
B) glucose-6-phosphate 
C) an inorganic phosphate group 
D) hexokinase 
E) glucose triphosphate

Question 6

At the end of glycolysis, how many pyruvate molecules have been produced from 10 glucose molecules?

Accepted Answer

A) 20 
B) 60 
C) 120 
D) 140 
E) 360 
A) 20 
B) 60 
C) 120 
D) 140 
E) 360

Question 7

The hormones glucagon and epinephrine primarily control which biochemical pathway?

Accepted Answer

A) glycolysis 
B) digestion 
C) glycogenolysis 
D) glycogenesis 
E) oxidative phosphorylation 
A) glycolysis 
B) digestion 
C) glycogenolysis 
D) glycogenesis 
E) oxidative phosphorylation

Question 8

Which organ is the main site of gluconeogenesis?

Accepted Answer

A) gall bladder 
B) pancreas 
C) small intestine 
D) stomach 
E) liver 
A) gall bladder 
B) pancreas 
C) small intestine 
D) stomach 
E) liver

Question 9

In alcohol fermentation, yeast converts? ethanol into acetic acid.

Accepted Answer

A) True 
 B)False

Question 10

The end products of fermentation are ethylene glycol and carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 11

Why is the pentose phosphate pathway important?

Accepted Answer

A) It produces more ATP molecules than any other biochemical pathway. 
B) It is an alternate pathway for glucose oxidation, and provides important molecules such as NADPH and sugar phosphates. 
C) It is an alternate pathway for the production of glucose and energy. 
D) It serves as the primary pathway for the reoxidation of NADH to NAD+. 
E) It converts 5-carbon sugars to 6-carbon sugars, thereby allowing them to enter into the glycolysis pathway. 
A) It produces more ATP molecules than any other biochemical pathway. 
B) It is an alternate pathway for glucose oxidation, and provides important molecules such as NADPH and sugar phosphates. 
C) It is an alternate pathway for the production of glucose and energy. 
D) It serves as the primary pathway for the reoxidation of NADH to NAD+. 
E) It converts 5-carbon sugars to 6-carbon sugars, thereby allowing them to enter into the glycolysis pathway.

Question 12

Which pathway is believed to be the first successful pathway for harvesting energy to have evolved on Earth?

Accepted Answer

A) glycogenesis 
B) Krebs Cycle 
C) glycolysis 
D) pentose phosphate pathway 
E) lactate fermentation 
A) glycogenesis 
B) Krebs Cycle 
C) glycolysis 
D) pentose phosphate pathway 
E) lactate fermentation

Question 13

Aldolase splits fructose-1,6-bisphosphate into two compounds.One is glyceraldehyde-3-phosphate.What is the other product of this reaction?

Accepted Answer

A) glyceraldehyde-2-phosphate 
B) glyceraldehyde-1-phosphate 
C) dihydroxyacetone phosphate 
D) phosphoenolpyruvate 
E) 1,3-bisphosphoglycerate 
A) glyceraldehyde-2-phosphate 
B) glyceraldehyde-1-phosphate 
C) dihydroxyacetone phosphate 
D) phosphoenolpyruvate 
E) 1,3-bisphosphoglycerate

Question 14

Which statement concerning glycogenolysis is FALSE?

Accepted Answer

A) It is the process by which glycogen is broken down into glucose. 
B) It is a pathway that provides the brain and muscle with free glucose. 
C) It has the effect of raising blood glucose levels. 
D) It is utilized when vigorous activity depletes blood glucose levels. 
E) It is activated by the secretion of insulin into the bloodstream. 
A) It is the process by which glycogen is broken down into glucose. 
B) It is a pathway that provides the brain and muscle with free glucose. 
C) It has the effect of raising blood glucose levels. 
D) It is utilized when vigorous activity depletes blood glucose levels. 
E) It is activated by the secretion of insulin into the bloodstream.

Question 15

Which enzyme catalyzes the hydrolysis of dietary proteins in the stomach?

Accepted Answer

A) lactase 
B) pepsin 
C) lipase 
D) amylase 
E) insulin 
A) lactase 
B) pepsin 
C) lipase 
D) amylase 
E) insulin

What hydrolysis product of fats is converted into glyceraldehyde-3-phosphate so that it may enter the glycolysis pathway?

Glycogenesis occurs under which of the following conditions?

The abbreviated form of the equation for the hydrolysis of ATP is shown below.What is the missing product in this reaction? ATP → ADP + ? + 7 kcal/mol

Which of the statements concerning gluconeogenesis is FALSE?

The abbreviated form of the equation for the first reaction of glycolysis is shown below.What is the missing product in this reaction? glucose + P_i + 3 kcal/mol → water + ?

At the end of glycolysis, how many pyruvate molecules have been produced from 10 glucose molecules?

The hormones glucagon and epinephrine primarily control which biochemical pathway?

Which organ is the main site of gluconeogenesis?

In alcohol fermentation, yeast converts? ethanol into acetic acid.

The end products of fermentation are ethylene glycol and carbon dioxide.

Why is the pentose phosphate pathway important?

Which pathway is believed to be the first successful pathway for harvesting energy to have evolved on Earth?

Aldolase splits fructose-1,6-bisphosphate into two compounds.One is glyceraldehyde-3-phosphate.What is the other product of this reaction?

Which statement concerning glycogenolysis is FALSE?

Which enzyme catalyzes the hydrolysis of dietary proteins in the stomach?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

Exam 21: Carbohydrate Metabolism

What hydrolysis product of fats is converted into glyceraldehyde-3-phosphate so that it may enter the glycolysis pathway?

Glycogenesis occurs under which of the following conditions?

The abbreviated form of the equation for the hydrolysis of ATP is shown below.What is the missing product in this reaction? ATP → ADP + ? + 7 kcal/mol

Which of the statements concerning gluconeogenesis is FALSE?

The abbreviated form of the equation for the first reaction of glycolysis is shown below.What is the missing product in this reaction? glucose + Pi + 3 kcal/mol → water + ?

At the end of glycolysis, how many pyruvate molecules have been produced from 10 glucose molecules?

The hormones glucagon and epinephrine primarily control which biochemical pathway?

Which organ is the main site of gluconeogenesis?

In alcohol fermentation, yeast converts? ethanol into acetic acid.

The end products of fermentation are ethylene glycol and carbon dioxide.

Why is the pentose phosphate pathway important?

Which pathway is believed to be the first successful pathway for harvesting energy to have evolved on Earth?

Aldolase splits fructose-1,6-bisphosphate into two compounds.One is glyceraldehyde-3-phosphate.What is the other product of this reaction?

Which statement concerning glycogenolysis is FALSE?

Which enzyme catalyzes the hydrolysis of dietary proteins in the stomach?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

The abbreviated form of the equation for the first reaction of glycolysis is shown below.What is the missing product in this reaction? glucose + P_i + 3 kcal/mol → water + ?