Question 1

The largest reserve of metabolic energy in humans after triacylglycerols is in the form of

Accepted Answer

A)  protein. 
B)  free glucose. 
C)  liver glycogen. 
D)  phospholipid. 
E)  muscle glycogen. 
A)  protein. 
B)  free glucose. 
C)  liver glycogen. 
D)  phospholipid. 
E)  muscle glycogen.

Question 2

Parathyroid hormone (PTH)

Accepted Answer

A)  is secreted in response to above normal Ca2+ levels in the plasma 
B)  is secreted in response to below normal phosphate levels in the plasma 
C)  acts on the liver to promote hydroxylation of vitamin D 
D)  acts to raise plasma Ca2+ to normal by stimulating Ca2+ reabsorption from the kidney tubule 
E)  acts to lower plasma Ca2+ and phosphate by stimulating absorption from the gut 
A)  is secreted in response to above normal Ca2+ levels in the plasma 
B)  is secreted in response to below normal phosphate levels in the plasma 
C)  acts on the liver to promote hydroxylation of vitamin D 
D)  acts to raise plasma Ca2+ to normal by stimulating Ca2+ reabsorption from the kidney tubule 
E)  acts to lower plasma Ca2+ and phosphate by stimulating absorption from the gut

Question 3

The form of stored energy in man which is largest in terms of caloric yield per gram is

Accepted Answer

A)  protein. 
B)  glucose. 
C)  glycogen. 
D)  triglyceride. 
E)  lipoprotein. 
A)  protein. 
B)  glucose. 
C)  glycogen. 
D)  triglyceride. 
E)  lipoprotein.

Question 4

All of the following is/are fat soluble vitamin(s) EXCEPT which one?

Accepted Answer

A)  vitamin A 
B)  vitamin E 
C)  vitamin K 
D)  vitamin C 
A)  vitamin A 
B)  vitamin E 
C)  vitamin K 
D)  vitamin C

Question 5

Cobalamin is a coenzyme which is required for the metabolic conversion in animals of

Accepted Answer

A)  Glycine to serine. 
B)  Valine to propionyl CoA. 
C)  Homocysteine to methionine. 
D)  all of the above. 
E)  B and C only. 
A)  Glycine to serine. 
B)  Valine to propionyl CoA. 
C)  Homocysteine to methionine. 
D)  all of the above. 
E)  B and C only.

Question 6

All of the following are included under the heading of dietary fiber EXCEPT

Accepted Answer

A)  cellulose 
B)  collagens 
C)  gums 
D)  lignins 
E)  pectins 
A)  cellulose 
B)  collagens 
C)  gums 
D)  lignins 
E)  pectins

Question 7

Which one of the following affects the absorption of calcium?

Accepted Answer

A)  25-hydroxycholecalciferol 
B)  25-hydroxyergocalciferol 
C)  7-dehydrocholesterol 
D)  calcitriol 
E)  colestipol 
A)  25-hydroxycholecalciferol 
B)  25-hydroxyergocalciferol 
C)  7-dehydrocholesterol 
D)  calcitriol 
E)  colestipol

Question 8

Which of the following statements about vitamin K is correct?

Accepted Answer

A)  Vitamin K is obtained commercially from rats. 
B)  It is a water soluble vitamin. 
C)  It is a cofactor for an enzyme which carboxylates glutamate residues in proteins. 
D)  When bound to activated prothrombin, vitamin K provides a binding site for calcium ions. 
E)  When in the diet, it enhances the uptake of iron. 
A)  Vitamin K is obtained commercially from rats. 
B)  It is a water soluble vitamin. 
C)  It is a cofactor for an enzyme which carboxylates glutamate residues in proteins. 
D)  When bound to activated prothrombin, vitamin K provides a binding site for calcium ions. 
E)  When in the diet, it enhances the uptake of iron.

Question 9

Which of the following results in a negative nitrogen balance?

Accepted Answer

A)  Convalescence 
B)  Growth 
C)  Major trauma 
D)  Nursing 
E)  Pregnancy 
A)  Convalescence 
B)  Growth 
C)  Major trauma 
D)  Nursing 
E)  Pregnancy

Question 10

Riboflavin is a part of a coenzyme involved in which type of reaction?

Accepted Answer

A)  oxidation-reduction 
B)  transamination 
C)  decarboxylation 
D)  one carbon transfer 
E)  phosphorylation 
A)  oxidation-reduction 
B)  transamination 
C)  decarboxylation 
D)  one carbon transfer 
E)  phosphorylation

Question 11

The formation of vitamin D (cholecalciferol) from -dehydrocholesterol requires

Accepted Answer

A)  a photochemical step. 
B)  a hydroxylation in kidney. 
C)  a hydroxylation in liver. 
D)  hydroxylation in both kidney and liver. 
E)  ingestion of 1,25 dihydroxycalciferol. 
A)  a photochemical step. 
B)  a hydroxylation in kidney. 
C)  a hydroxylation in liver. 
D)  hydroxylation in both kidney and liver. 
E)  ingestion of 1,25 dihydroxycalciferol.

Question 12

Thiamine pyrophosphate is involved in

Accepted Answer

A)  oxidation-reduction reactions. 
B)  carboxylation reactions. 
C)  decarboxylation reactions. 
D)  aminotransferases. 
E)  none of the above 
A)  oxidation-reduction reactions. 
B)  carboxylation reactions. 
C)  decarboxylation reactions. 
D)  aminotransferases. 
E)  none of the above

Question 13

The activation of trypsinogen to form trypsin in the small intestine is carried out by

Accepted Answer

A)  pepsin. 
B)  enteropeptidase. 
C)  carboxypeptidases. 
D)  elastase. 
E)  ribonuclease. 
A)  pepsin. 
B)  enteropeptidase. 
C)  carboxypeptidases. 
D)  elastase. 
E)  ribonuclease.

Question 14

The metabolic energy content of fat is approximately

Accepted Answer

A)  3 Cal/gm 
B)  5 Cal/gm 
C)  7 Cal/gm 
D)  9 Cal/gm 
E)  11 Cal/gm 
A)  3 Cal/gm 
B)  5 Cal/gm 
C)  7 Cal/gm 
D)  9 Cal/gm 
E)  11 Cal/gm

Question 15

Which one of the following coenzymes contains cobalt as an essential constituent?

Accepted Answer

A)  nicotinamide adenine dinucleotide 
B)  flavin mononucleotide 
C)  5'-deoxyadenosylcobalamine 
D)  tetrahydrofolic acid 
E)  pyridoxal phosphate 
A)  nicotinamide adenine dinucleotide 
B)  flavin mononucleotide 
C)  5'-deoxyadenosylcobalamine 
D)  tetrahydrofolic acid 
E)  pyridoxal phosphate

Question 16

What red blood cell enzyme contains selenocysteine

Accepted Answer

A)  GSH peroxidase 
B)  GSH reductase 
C)  Iodothyronine deiodinase 
D)  Succinate dehydrogenase 
E)  Thioredoxin reductase 
A)  GSH peroxidase 
B)  GSH reductase 
C)  Iodothyronine deiodinase 
D)  Succinate dehydrogenase 
E)  Thioredoxin reductase

Question 17

Vitamin A can be synthesized in the body from the dietary provitamin form

Accepted Answer

A)  beta carotene 
B)  11-cis-retinal 
C)  cholesterol 
D)  11-cis-retinol 
A)  beta carotene 
B)  11-cis-retinal 
C)  cholesterol 
D)  11-cis-retinol

Question 18

Which of the following is a coenzyme form of vitamin B?

Accepted Answer

A)  Aquocobalamin 
B)  Cyanocobalamin 
C)  Transcobalamin 
D)  Methylcobalamin 
A)  Aquocobalamin 
B)  Cyanocobalamin 
C)  Transcobalamin 
D)  Methylcobalamin

Question 19

Vitamin E functions primarily as:

Accepted Answer

A)  a promoter of calcium absorption from the intestine. 
B)  an antioxidant in the plasma membrane. 
C)  a cofactor in generation of blood clotting factors. 
D)  a promoter of human fertility. 
E)  a coenzyme involved in intermediary . 
A)  a promoter of calcium absorption from the intestine. 
B)  an antioxidant in the plasma membrane. 
C)  a cofactor in generation of blood clotting factors. 
D)  a promoter of human fertility. 
E)  a coenzyme involved in intermediary .

Question 20

Which of the following is a coenzyme form of vitamin B6?

Accepted Answer

A)  nicotinamide adenine dinucleotide 
B)  flavin adenine dinucleotide 
C)  thiamine pyrophosphate 
D)  pyridoxal phosphate 
E)  tetrahydrofolic acid 
A)  nicotinamide adenine dinucleotide 
B)  flavin adenine dinucleotide 
C)  thiamine pyrophosphate 
D)  pyridoxal phosphate 
E)  tetrahydrofolic acid

Exam 27: Principles of Nutrition I and II

The largest reserve of metabolic energy in humans after triacylglycerols is in the form of

Parathyroid hormone (PTH)

The form of stored energy in man which is largest in terms of caloric yield per gram is

All of the following is/are fat soluble vitamin(s) EXCEPT which one?

Cobalamin is a coenzyme which is required for the metabolic conversion in animals of

All of the following are included under the heading of dietary fiber EXCEPT

Which one of the following affects the absorption of calcium?

Which of the following statements about vitamin K is correct?

Which of the following results in a negative nitrogen balance?

Riboflavin is a part of a coenzyme involved in which type of reaction?

The formation of vitamin D (cholecalciferol) from -dehydrocholesterol requires

Thiamine pyrophosphate is involved in

The activation of trypsinogen to form trypsin in the small intestine is carried out by

The metabolic energy content of fat is approximately

Which one of the following coenzymes contains cobalt as an essential constituent?

What red blood cell enzyme contains selenocysteine

Vitamin A can be synthesized in the body from the dietary provitamin form

Which of the following is a coenzyme form of vitamin B?

Vitamin E functions primarily as:

Which of the following is a coenzyme form of vitamin B6?

Eukaryotic Cell Structure

DNA and RNA: Composition and Structure

Protein I: Composition and Structure

DNA Replication, Recombination, and Repair

RNA: Transcription and Rna Processing

Protein Synthesis: Translation and Posttranslational Modifications

Recombinant Dna and Biotechnology

Regulation of Gene Expression

Protein II: Structure-Function Relationships in Protein Families

Enzymes: Classification, Kinetics, and Control

The Cytochromes P450 and Nitric Oxide Synthases

Biological Membranes: Structure and Membrane Transport

Fundamentals of Signal Transduction

Bioenergetics and Oxidative Metabolism

Carbohydrate Metabolism I: Major Metabolic Pathways and Their Control

Carbohydrate Metabolism II: Special Pathways and Glycoconjugates

Lipid Metabolism I: Synthesis, Storage, and Utilization of Fatty Acids and Triacylglycerols

Lipid Metabolism II: Pathways of Metabolism of Special Lipids

Amino Acid Metabolism

Purine and Pyrimidine Nucleotide Metabolism

Metabolic Interrelationships

Biochemistry of Hormones

Molecular Cell Biology

Cell Cycle, Programmed Cell Death, and Cancer

Digestion and Absorption of Basic Nutritional Constituents

Digestion and Absorption of Basic Nutritional Constituents

Filters

Which of the following is a coenzyme form of vitamin B₆?