Question 1

When glucose is consumed in excess, the following reaction occurs.

Accepted Answer

A) True 
 B)False

Question 2

The first step in the processes of glycolysis is a phosphorolation.

Accepted Answer

A) True 
 B)False

Question 3

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 4

Which of the following hormones acts to raise the blood glucose level?

Accepted Answer

A) glucagon 
B) insulin 
C) epinephrine 
D) More than one response is correct. 
A) glucagon 
B) insulin 
C) epinephrine 
D) More than one response is correct.

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Insulin, glucagon and epinephrine all target the liver for control of glucose levels in the body.

Accepted Answer

A) True 
 B)False

Question 7

Chemiosmotic hypothesis is the postulate that a(n)____ flow across the inner mitochondrial membrane during operation of the electron transport chain provides energy for ATP production.

Accepted Answer

A) electron 
B) proton 
C) neutron 
D) electrical 
A) electron 
B) proton 
C) neutron 
D) electrical

Question 8

Epinephrine stimulates glycolysis.

Accepted Answer

A) True 
 B)False

Question 9

Under aerobic conditions in humans, what is pyruvate converted to?

Accepted Answer

A) ethanol 
B) lactate 
C) CO2 
D) none of these 
A) ethanol 
B) lactate 
C) CO2 
D) none of these

Question 10

Lactose intolerance

Accepted Answer

A) can only be controlled by eliminating dairy products. 
B) produces symptoms including bloating and diarrhea. 
C) is due to a missing enzyme by approximately 20% of adults in the USA. 
D) All of these responses are correct. 
A) can only be controlled by eliminating dairy products. 
B) produces symptoms including bloating and diarrhea. 
C) is due to a missing enzyme by approximately 20% of adults in the USA. 
D) All of these responses are correct.

Question 11

Insulin is a regulatory enzyme.

Accepted Answer

A) True 
 B)False

Question 12

The normal blood sugar level, for an adult, measured after a fast of 8-12 hours is

Accepted Answer

A) 90-110 mg\100 mL. 
B) 40-80 mg\100 mL. 
C) 50-70 mg\100mL. 
D) 70-110 mg\100mL. 
A) 90-110 mg\100 mL. 
B) 40-80 mg\100 mL. 
C) 50-70 mg\100mL. 
D) 70-110 mg\100mL.

Question 13

Which of the following foods is most likely to cause problems to those individuals that are lactose intolerant?

Accepted Answer

A) Swiss cheese 
B) skim milk 
C) cheddar cheese 
D) margarine 
A) Swiss cheese 
B) skim milk 
C) cheddar cheese 
D) margarine

Question 14

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 15

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 16

Consider the figure below.  What process is depicted?

Accepted Answer

A) Cori cycle 
B) glycolysis 
C) fermentation 
D) glucogenolysis 
A) Cori cycle 
B) glycolysis 
C) fermentation 
D) glucogenolysis

Question 17

Low carbohydrate intake during heavy exercise followed by high carbohydrate intake with light exercise is an example of ____ loading.

Accepted Answer

A) carbohydrate 
B) ATP 
C) energy 
D) glucose 
A) carbohydrate 
B) ATP 
C) energy 
D) glucose

Question 18

Phosphofructokinase, one of the enzymes which regulates the glycolysis pathway, is activated by _____ .

Accepted Answer

A) glucose 
B) citrate 
C) ADP 
D) ATP 
A) glucose 
B) citrate 
C) ADP 
D) ATP

Question 19

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 20

During the first step of the citric acid cycle, citrate is produced from an acetyl group and ____?

Accepted Answer

A) oxaloacetate 
B) malate 
C) pyruvate 
D) fumerate 
A) oxaloacetate 
B) malate 
C) pyruvate 
D) fumerate

Exam 23: Carbohydrate Metabolism

When glucose is consumed in excess, the following reaction occurs.

The first step in the processes of glycolysis is a phosphorolation.

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

Which of the following hormones acts to raise the blood glucose level?

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

Insulin, glucagon and epinephrine all target the liver for control of glucose levels in the body.

Chemiosmotic hypothesis is the postulate that a(n)____ flow across the inner mitochondrial membrane during operation of the electron transport chain provides energy for ATP production.

Epinephrine stimulates glycolysis.

Under aerobic conditions in humans, what is pyruvate converted to?

Lactose intolerance

Insulin is a regulatory enzyme.

The normal blood sugar level, for an adult, measured after a fast of 8-12 hours is

Which of the following foods is most likely to cause problems to those individuals that are lactose intolerant?

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

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

Consider the figure below. What process is depicted?

Low carbohydrate intake during heavy exercise followed by high carbohydrate intake with light exercise is an example of ____ loading.

Phosphofructokinase, one of the enzymes which regulates the glycolysis pathway, is activated by _____ .

Which of the following occurs in the citric acid cycle?

During the first step of the citric acid cycle, citrate is produced from an acetyl group and ____?

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

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Nutrition and Energy for Life

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