Exam 4

Question 1

The correct chemical formula for vitamin A is

Answer 1

C20H30O

Question 2

With regards to pellagra, high intake of molasses could lead to

Answer 2

Diarrhea

Question 3

The deficiency of this vitamin results in xeropthalmia (or dry eye condition) and testicular degeneration

Answer 3

Vit A

Question 4

The functions of vitamin C include the following

Answer 4

All the above

Question 5

This vitamin is fat soluble

Answer 5

α-tocopherol

Question 6

Formiminoglutamic acid is found in large amount in the urine of animals that are deficient in?

Answer 6

Folic acid

Question 7

The main storehouse of vitamin A is the

Answer 7

Liver

Question 8

The most popular synthetic form of vitamin A is

Answer 8

Palmitate

Question 9

Which of the following all-trans isomers of carotenoid is the most potent?

Answer 9

β-carotene

Question 10

This vitamin is not stored in the body of animals (pig is an exception)

Answer 10

Thiamine

Question 11

The degenerative changes in the testes of an animal as a result of this vitamin is not reversible

Answer 11

Vit E

Question 12

The most active form of vitamin E is the _____ form

Answer 12

Alpha

Question 13

In terms of relative potency of vitamin A isomer, which of the follow is the most potent?

Answer 13

All-trans

Question 14

In the absence of this vitamin, pyruvic acid and lactate accumulate in the blood and tissue of an animal

Answer 14

Thiamine

Question 15

The vitamin that is phosphorylated in the liver (post absorption) and is involved in protein/amino acid metabolism is known as

Answer 15

Pyridoxine

Question 16

.The process through which nonessential amino acids are synthesized (transamination reaction) requires a certain vitamin. In addition to transamination, this vitamin also plays an important role in the decarboxylation reactions in the body of an animal

Answer 16

Pyridoxine

Question 17

Avidin is a protein in egg white, is an antagonistic to

Answer 17

Biotin

Question 18

The deficiency of _______ (a vitamin) results in a situation in which certain amino acid cannot be condensed with succinyl CoA to form α-amino-β-ketoadipic acid which is the initial step in heme synthesis. What is this name of this vitamin and amino acid?

Answer 18

Pyridoxine; Glycine

Question 19

The following are symptoms of pellagra (caused by niacin deficiency) in man except

Answer 19

Fetal resorption

Question 20

This vitamin is sensitive to acid, base, and heat and it is normally sold as its calcium salt. It is also involved in the acetylation of choline

Answer 20

Pantothenic acid

Question 21

This vitamin occurs in nature and in natural products in bound form and serves as a prosthetic group for a series of enzymes that incorporate CO2 into organic linkages

Answer 21

Biotin

Question 22

Hemorrhagic sweet clover disease is a problem associated with antagonism between dicoumarol and vitamin______.

Answer 22

K

Question 23

As a result of pancreatic cancer, the pancreas of a cow is completely removed but the animal is supplied with adequate amount of insulin on a daily basis. Despite this, the animal still developed a condition that is known as “fatty liver”. As discussed in class, the deficiency of which vitamin would result in this condition (fatty liver)?

Answer 23

Choline

Question 24

This vitamin serves as a donor of methyl group mediated through its role in forming S-adenosylmethionine (SAM)

Answer 24

Choline

Question 25

One of the vitamins that we discussed in class occurs in two forms - a reduced form that is readily oxidized to a dehydro form. However, both of these forms are biologically active. Which of the following is the vitamin.

Answer 25

Vit C

Question 26

This vitamin is involved in tyrosine metabolism.

Answer 26

Vit C

Question 27

The most common non-nutritive feed additives in use include

Answer 27

All the above

Question 28

Food and Drug Administration (FDA) regulates antimicrobial and anthelmintic as drugs. Hence, they (FDA) regulate which of the following?

Answer 28

Allowable combinations

Question 29

When antibiotics are added to the diet for disease prevention, the level of inclusion in the feed is

Answer 29

50 to 200 g/ton of feed

Question 30

A synthetic growth hormone that was approved for increased milk production in dairy cattle is known as

Answer 30

Bovine somatotropin (BST)

Question 31

Which of the following is true for vitamin B12?

Answer 31

The only source of vitamin B12 is from microbes

Question 32

Vitamin B12 requires a certain mineral to be functional. Which of the following is the mineral that is found in the center of vitamin B12 structure?

Answer 32

Cobalt

Question 33

Which of the following is correct? Vitamins are

Answer 33

All the above

Question 34

Water soluble vitamins

Answer 34

Choline; Niacin; Biotin

Question 35

This feed additive (usually an indigestible carbohydrate) is resistant to enzymatic degradation/digestion in the small intestine but can be broken down by bacteria in the hind gut. It is used to promote gut health.

Answer 35

Prebiotics