vitamins

Question 1

What are the fat soluble vitamins

Answer 1

A, D, E, K

Question 2

Water soluble vitamins

Answer 2

B,C

Question 3

What do fat soluble vitamins do?

Answer 3

absorb fat in the diet

Question 4

When does malabsorption occur in the body

Answer 4

when there isn’t enough fat soluble vitamins

Question 5

Vitamin A includes a class of chemicals called

Answer 5

Retinoids and subunits of these are: retinol, retinal, and retinalaldehyde

Question 6

Retinoids play a role in what

Answer 6

day and night vision

Question 7

Vitamin d is needed for

Answer 7

calcium absorption (from intestines)
calcium and phosphate homeostasis, storage and metabolism

Question 8

Vitamin E

Answer 8

tocopherol is the antioxidant that protects cells from oxidative energy, free radicals

Question 9

All clotting factors require Vitamin _ for activation

Answer 9

K

Question 10

Vitamin K deficiency can lead to

Answer 10

increased clotting time ( takes longer to clot )

Question 11

What is the source of vitamin a

Answer 11

carotenoids in green foliage . B carotene

Question 12

Functions of vitamin a

Answer 12

vision (rods and cones)
reproduction
differentiation of epithelial cells

Question 13

Deficiency of Vitamin a leads to

Answer 13

night blindness , poor growth, dry skin

Question 14

How can Vitamin A toxicity occur in cats

Answer 14

feeding high amount of liver , which causes excessive resorption of bone and remodeling, and fusion of spine

Question 15

hyena disease in cattle occurs from

Answer 15

giving large amounts of vitamin a to treat diarrhea. causes remolding of bones

Question 16

Vitamin a toxicity can lead to

Answer 16

skin erythema

Question 17

precursor of vitamin d is

Answer 17

7-dehydrocholesterol

Question 18

UV light helps in producing vitaminn d 3 from

Answer 18

cholesterol

Question 19

hydroxylation of vitamin d inactive form takes place where

Answer 19

liver and kidneys

Question 20

how does vitamin d3 change to its active form in the liver

Answer 20

vitamin d3—– 25-hydroxy vitamin d

Question 21

how does vitamin d3 change to its active form in the kidneys

Answer 21

25-hydroxy vitamin d —- 1, 25 hydroxy vitamin d (steroid hormone )—> binds to intracellular receptors

Question 22

Vitamin D deficiency causes what in adults and in young

Answer 22

adults- osteomalacia

rickets - young

Question 23

if the diet is high in calcium :

Answer 23

calcium will diffuse from the lumen into the intestine by passive diffusion

Question 24

if the diet is not high in calcium or if animal is growing

Answer 24

vitamin d creates carriers in intestines of epithelial cells using active transport(needs 1,25 vit d). vitamin d binds to intercellular receptors as a intercellular ligand for synthesis of calcium binding proteins