Vitamins Flashcards

Learn about the basic functioning of Vitamins

1
Q

Forms of Vitamin A

A

Retinol, Beta Carotene

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2
Q

What is main form of Vitamin D

A

Calciferol

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3
Q

What are forms of Vitamin E?

A

Tocopherols, Tocotrienols

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4
Q

Forms of Vitamin K

A

Phylloquinones and Menaquinones

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5
Q

Forms of Vitamin B

A

B1-Thiamin. B2-Riboflavin and Niacin, B6-Pyridoxine, Pyridoxal, Pyridoxine. FOLIC ACID. B12-Cobalamin, Pantothenic acid.

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6
Q

What are the main forms of Vitamin H and C respectively?

A

Biotin and Ascorbic acid.

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7
Q

Functions of Vitamin A

A
  • Visual pigments in retina, Control of gene expression
  • control of cell differentiation
  • antioxidant
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8
Q

Deficiency of Vitamin A can lead to

A

-Night blindness, Xerophthalmia, Keratinization of skin

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8
Q

Deficiency of Vitamin A can lead to

A

-Night blindness, Xerophthalmia, Keratinization of skin

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9
Q

Function of Calciferol

A
  • Enhances intestinal absorption of Calcium ions.
  • Maintains Calcium balance
  • Mobilizing of bone mineral
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10
Q

Deficiency of calciferol causes

A

Rickets-poor mineralization

Osteomalacia-demineralization

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11
Q

What is the function of Vitamin E?

A

Antioxidant especially in cell membrane.

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12
Q

What does Vitamin E deficiency cause?

A

Very rare, extreme neurological disease

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13
Q

Function of Vitamin K

A

Coenzyme in formation of Gamma carboxyglutamate which makes up enzymes of clotting and bone matrix

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14
Q

Deficiency of Vitamin K causes.

A

Impaired clotting, Haemophilia, Hemorrhagic disease

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15
Q

Function of Thiamin (B1)

A

Coenzyme in pyruvate and alpha ketoglutarate dehydrogenases, transketolases. Unknown function in nerve conduction.

16
Q

Deficiency of Thiamin causes

A

Peripheral nerve damage (beriberi), CNS lesions(Werniche-Korsakoff syndrome)

17
Q

Functions of Riboflavin

A

Coenzyme in reduction and Oxidation reactions.

Prosthetic group of flavoproteins

18
Q

Deficiency of Riboflavin leads to

A

Seborrhoeic dermatitis, lesions of mouth, lips and tongue

19
Q

What is the function of Niacin in the body?

A

Co enzyme in redox reactions functional part of NADP and NAD

20
Q

Niacin deficiency causes

A

Pellagra, photosensitive dermatitis, depressive psychosis

21
Q

Vitamin B6 functions are

A

Co enzyme in transamination and decarboxylation of amino acids glycogen phosphorylase.

22
Q

Vitamin B deficiency causes

A

Disorders of amino acid metabolism

23
Q

Folic acid functions in the body is to?

A

Coenzyme in transfer of one carbon fragments

24
Q

Folic acid deficiency causes

A

Megaloblastic anemia

25
Q

What is the function of Cobalamin in the body?

A

Co enzyme in transfer of one carbon fragments.

Folic acid metabolism

26
Q

Cobalamin deficiency causes

A

Pernicious anemia-megaloblastic anemia with degeneration of spinal cord

27
Q

Pantothenic acid function is to

A

Functional part of CoA and acyl carrier proteins fatty scid synthesis

28
Q

What is the function of Vitamin H Biotin

A

Coenzyme in carboxylation reactions in gluconeogenesis and fatty acid synthesis

29
Q

What is deficiency effect of Biotin

A

Impaired fat and carbohydrate metabolism, dermatitis

30
Q

Ascorbic acid function is

A

Coenzyme hydroxylation of proline and lysine in collagen synthesis, antioxidant, enhanced iron absorption