Question 1

All of the members of the citric acid cycle are acids.

Accepted Answer

A) True 
 B)False

Question 2

The electrons and hydrogen ions carried from the citric acid cycle by FADH2 and NADH ultimately end up in the following reaction which occurs in the matrix of the mitochondria.

Accepted Answer

A) True 
 B)False

Question 3

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 4

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 5

Glycolysis is a metabolic pathway that is self-regulating.

Accepted Answer

A) True 
 B)False

Question 6

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 7

The process where ADP is converted to ATP while coupled to the electron transport chain is

Accepted Answer

A)  citric acid cycle. 
B)  alcohol fermentation. 
C)  oxidative phosphorylation. 
D)  the Cori cycle. 
A)  citric acid cycle. 
B)  alcohol fermentation. 
C)  oxidative phosphorylation. 
D)  the Cori cycle.

Question 8

The major products of carbohydrate digestion are _____ .

Accepted Answer

A)  monosaccharides 
B)  monosaccharides & disaccharides 
C)  acetyl CoA 
D)  pyruvic acid 
A)  monosaccharides 
B)  monosaccharides & disaccharides 
C)  acetyl CoA 
D)  pyruvic acid

Question 9

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

Accepted Answer

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

Question 10

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 11

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 12

What ions present in the cytochrome aid in passing electrons along the electron transport chain?

Accepted Answer

A)  Fe2+ and Fe3+ 
B)  Cu+ and Cu2+ 
C)  Zn+ and Zn2+ 
D)  Mg2+ and Na+ 
A)  Fe2+ and Fe3+ 
B)  Cu+ and Cu2+ 
C)  Zn+ and Zn2+ 
D)  Mg2+ and Na+

Question 13

In the body,the fermentation process is limited to production of lactate from pyruvate in the muscles.However,there are other types of fermentation.

Accepted Answer

A) True 
 B)False

Question 14

Glycolysis

Accepted Answer

A)  costs two ATP molecules at the beginning of the process. 
B)  produces four ATP molecules. 
C)  has a resultant molecule that enters the next step of the process,the citric acid cycle. 
D)  More than one response is correct. 
A)  costs two ATP molecules at the beginning of the process. 
B)  produces four ATP molecules. 
C)  has a resultant molecule that enters the next step of the process,the citric acid cycle. 
D)  More than one response is correct.

Question 15

Contrast complete glucose oxidation,lactate fermentation,and alcoholic fermentation.

Accepted Answer

A)  Glucose oxidation produces approximately the same amount of ATP as lactate and alcoholic fermentation together. 
B)  Lactate fermentation is the most important process of the three for the production of energy in muscles that are performing extended periods of work. 
C)  Lactate fermentation produces less ATP than does glucose oxidation,but approximately the same amount of ATP as alcoholic fermentation. 
D)  The complete oxidation of glucose produces fructose;that of lactate fermentation produces lactic acid;and that of alcoholic fermentation produces ethanol. 
A)  Glucose oxidation produces approximately the same amount of ATP as lactate and alcoholic fermentation together. 
B)  Lactate fermentation is the most important process of the three for the production of energy in muscles that are performing extended periods of work. 
C)  Lactate fermentation produces less ATP than does glucose oxidation,but approximately the same amount of ATP as alcoholic fermentation. 
D)  The complete oxidation of glucose produces fructose;that of lactate fermentation produces lactic acid;and that of alcoholic fermentation produces ethanol.

Question 16

Consider the diagram below.That is the step that is labeled 1 called?

Accepted Answer

A)  fermentation 
B)  gluconeogenesis 
C)  glycolysis 
D)  glycogenolysis 
A)  fermentation 
B)  gluconeogenesis 
C)  glycolysis 
D)  glycogenolysis

Question 17

Glucose is the only sugar used by the human body.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is a product of glycolysis?

Accepted Answer

A)  pyruvate 
B)  CO2 + H2O 
C)  lactate 
D)  acetyl CoA 
A)  pyruvate 
B)  CO2 + H2O 
C)  lactate 
D)  acetyl CoA

Question 19

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 20

The function of insulin is that it causes the cells to remove glucose from the circulatory system.

Accepted Answer

A) True 
 B)False

Exam 23: Carbohydrate Metabolism

All of the members of the citric acid cycle are acids.

The electrons and hydrogen ions carried from the citric acid cycle by FADH2 and NADH ultimately end up in the following reaction which occurs in the matrix of the mitochondria.

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.

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.

Glycolysis is a metabolic pathway that is self-regulating.

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

The process where ADP is converted to ATP while coupled to the electron transport chain is

The major products of carbohydrate digestion are _____ .

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

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

Blood sugar

What ions present in the cytochrome aid in passing electrons along the electron transport chain?

In the body,the fermentation process is limited to production of lactate from pyruvate in the muscles.However,there are other types of fermentation.

Glycolysis

Contrast complete glucose oxidation,lactate fermentation,and alcoholic fermentation.

Consider the diagram below.That is the step that is labeled 1 called?

Glucose is the only sugar used by the human body.

Which of the following is a product of glycolysis?

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

The function of insulin is that it causes the cells to remove glucose from the circulatory system.

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

The electrons and hydrogen ions carried from the citric acid cycle by FADH₂ and NADH ultimately end up in the following reaction which occurs in the matrix of the mitochondria.