Question 1

Glycolysis and the TCA are so efficient that over 90% of the chemical energy is stored in the form of ATP for the use of the cell.

Accepted Answer

A) True 
 B)False

Question 2

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 3

Insulin causes

Accepted Answer

A) liver to release glycogen. 
B) glucose to enters cells. 
C) glucose conversion to fat. 
D) HDL production. 
A) liver to release glycogen. 
B) glucose to enters cells. 
C) glucose conversion to fat. 
D) HDL production.

Question 4

Under anaerobic conditions in the body,pyruvate is converted to _____ .

Accepted Answer

A) ethanol 
B) CO2 & H2O 
C) acetyl CoA 
D) lactate 
A) ethanol 
B) CO2 & H2O 
C) acetyl CoA 
D) lactate

Question 5

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 6

Each turn of the citric acid cycle produces ____ molecules of CO2.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 7

Consider the figure shown below where four different pathways are labeled 1 - 4.Which of those pathway is a fermentation process?

Accepted Answer

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

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

Under aerobic conditions in the body,pyruvate is converted to _____ .

Accepted Answer

A) lactate 
B) acetyl CoA 
C) ethanol 
D) acetaldehyde 
A) lactate 
B) acetyl CoA 
C) ethanol 
D) acetaldehyde

Question 10

The high-energy compound involved in the conversion of glucose to glycogen is _____ .

Accepted Answer

A) GTP 
B) ATP 
C) ADP 
D) UTP 
A) GTP 
B) ATP 
C) ADP 
D) UTP

Question 11

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 12

The pain and cramps which accompany physical exhaustion are associated with the accumulation of excess _____ .

Accepted Answer

A) lactate 
B) pyruvate 
C) acetyl CoA 
D) acetaldehyde 
A) lactate 
B) pyruvate 
C) acetyl CoA 
D) acetaldehyde

Question 13

Blood sugar

Accepted Answer

A) is a term that normally refers to the concentration of glucose and fructose in the blood. 
B) should be in the range of 70-90 mg/mL or the renal threshold is exceeded. 
C) is regulated by the liver which removes glucose from the blood in response to an increase after a meal. 
D) testing can be inferred by the glucosuria test of the perspiration. 
A) is a term that normally refers to the concentration of glucose and fructose in the blood. 
B) should be in the range of 70-90 mg/mL or the renal threshold is exceeded. 
C) is regulated by the liver which removes glucose from the blood in response to an increase after a meal. 
D) testing can be inferred by the glucosuria test of the perspiration.

Question 14

Glycogenolysis can be correctly represented by which of the following _____ .

Accepted Answer

A) glucose $\rightarrow$glycogen 
B) glycogen $\rightarrow$glucose 
C) pyruvate $\rightarrow$glycogen 
D) glycogen$\rightarrow$pyruvate 
A) glucose $\rightarrow$glycogen 
B) glycogen $\rightarrow$glucose 
C) pyruvate $\rightarrow$glycogen 
D) glycogen$\rightarrow$pyruvate

Question 15

The direct fuel of the citric acid cycle is _____ .

Accepted Answer

A) glucose 
B) glycogen 
C) fatty acids 
D) acetyl CoA 
A) glucose 
B) glycogen 
C) fatty acids 
D) acetyl CoA

Question 16

The catabolism of one molecule of glucose in the muscle cells produces 32 ATP molecules.

Accepted Answer

A) True 
 B)False

Question 17

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 18

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 19

Control points of the citric acid cycle are shown by the numbers in the following diagram.Which of the following correctly describes control of the cycle>

Accepted Answer

A) Point 1 is inhibited by NADH and activated by ADP. 
B) Point 2 is inhibited by NADH and activated by ATP. 
C) Point 3 is inhibited by both NADH and ADP. 
D) All of the above are control points.. 
A) Point 1 is inhibited by NADH and activated by ADP. 
B) Point 2 is inhibited by NADH and activated by ATP. 
C) Point 3 is inhibited by both NADH and ADP. 
D) All of the above are control points..

Question 20

Glycolysis is a metabolic pathway that is self-regulating.

Accepted Answer

A) True 
 B)False

Exam 23: Carbohydrate Metabolism

Glycolysis and the TCA are so efficient that over 90% of the chemical energy is stored in the form of ATP for the use of the cell.

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

Insulin causes

Under anaerobic conditions in the body,pyruvate is converted to _____ .

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

Each turn of the citric acid cycle produces ____ molecules of CO2.

Consider the figure shown below where four different pathways are labeled 1 - 4.Which of those pathway is a fermentation process?

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

Under aerobic conditions in the body,pyruvate is converted to _____ .

The high-energy compound involved in the conversion of glucose to glycogen is _____ .

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.

The pain and cramps which accompany physical exhaustion are associated with the accumulation of excess _____ .

Blood sugar

Glycogenolysis can be correctly represented by which of the following _____ .

The direct fuel of the citric acid cycle is _____ .

The catabolism of one molecule of glucose in the muscle cells produces 32 ATP molecules.

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

Consider the figure below.What process is depicted?

Control points of the citric acid cycle are shown by the numbers in the following diagram.Which of the following correctly describes control of the cycle>

Glycolysis is a metabolic pathway that is self-regulating.

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

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Each turn of the citric acid cycle produces ____ molecules of CO₂.