Class test 3

Question 1

How are vitamins classified?

Answer 1

fat-soluble (A, D, E, K) and water-soluble (B-complex, C) types.

Question 2

Primary functions of vitamin A?

Answer 2

Vision (rhodopsin synthesis), epithelial integrity, immune function, and reproduction.

Question 3

Vitamin A deficiency signs?

Answer 3

Night blindness, xerophthalmia, Bitot’s spots

Question 4

Main active form of vitamin D?

Answer 4

Calcitriol (1,25-dihydroxycholecalciferol).

Question 5

Deficiency diseases of vitamin D?

Answer 5

Rickets (children), osteomalacia (adults), potential osteoporosis.

Question 6

Excess vitamin D effects?

Answer 6

Hypercalcemia, kidney stones, calcification of soft tissues.

Question 7

Vitamin E deficiency symptoms?

Answer 7

Neurological issues, hemolytic anemia

Question 8

Natural forms of vitamin K?

Answer 8

K1 (phylloquinone) from plants, K2 (menaquinone) from gut flora.

Question 9

Function of thiamine? B1

Answer 9

Coenzyme in carbohydrate metabolism (as TPP).

Question 10

Thiamine deficiency diseases?

Answer 10

Beri-beri

Question 11

Vit b2

Answer 11

Coenzyme in redox reactions

Question 12

Vitamin B3 (Niacin)

Answer 12

Coenzyme in energy metabolism (NAD, NADP).

Question 13

Classic niacin deficiency disease?

Answer 13

4 D’s: Dermatitis, Diarrhea, Dementia, Death.

Question 14

Function of pantothenic acid? b5

Answer 14

Part of coenzyme A – essential in metabolism of fats and carbohydrates.

Question 15

Key functions of vitamin B6?

Answer 15

Amino acid metabolism, neurotransmitter synthesis,

Question 16

Vitamin B9 (Folate)

Answer 16

DNA synthesis, methylation, red blood cell formation.

Question 17

Folate deficiency symptoms?

Answer 17

Megaloblastic anemia, fatigue, neural tube defects.

Question 18

Vitamin B12 (Cobalamin) disordewr causes

Answer 18

Pernicious anemia, strict vegan diet, GI disorders

Question 19

Symptoms of B12 deficiency?

Answer 19

Macrocytic anemia, peripheral neuropathy,