Fat Soluble Vitamins

Question 1

All vitamins can be synthesized in human body . True or false .

Question 2

Biochemically , vitamins are inorganic heterogeneous compounds. True or false

Question 3

List all the fat soluble vitamins.

Question 4

List all the water soluble vitamins.

Question 5

On the basis of function , water soluble vitamins can be further divided into :

Question 6

Which vitamins are responsible for releasing energy?

Question 7

Which vitamins are hematopoetic in function?

Question 8

Vitamin c is a fat soluble vitamin. True or false.

Question 9

Total number of vitamins required in human body are :

Question 10

Match the following

1.Vitamin A. Tocopherol
2.Vitamin K. Cholecalciferol
3.Vitamin E. Phylloquinone
4.Vitamin D. Retinol

Question 11

Both vitamin B7 and B9 are energy releasing in function. True or false.

Question 12

Vitamin B4 & vitamin B8 are also essential vitamins for human body. True or false.

Question 13

Collagen protein undergoes hydroxylation to increase its tensile strength. For this an important vitamin is required:

Question 14

An anaemic patient can be given which vitamins as supplements :

Question 15

Biochemically vitamin A is composed of ___________&__________

Question 16

Role of vitamin A in our body .

Question 17

Most biologically active form of vitamin A :

Question 18

_____________ is the precursor of retinol.

Question 19

Which chemical feature of vitamin A makes it an essential pigment for vision?

Question 20

Side chain of vitamin A is composed of _______ double bonds and ______functional group.

Question 21

Retinol on oxidation converts to ___________which on further oxidation converts to ___________ that functions as a hormone.

Question 22

Vitamin A derivative that acts as hormone :

Question 23

Retinol. —>. Retinal —> retenoic acid
<—-
A

Enzyme A is ?

Question 24

Retinol is reversibly converted into 11- cis retinal which links via ______ amino acid to opsin protein forming _________, our visual pigment.

Question 25

A patient with symptoms of night blindness visits a doctor and is given supplements of vitamin A bit even after few days of the treatment, there is no change in his situation. Which enzyme could be possibly defective?

Question 26

Retinal is aldehyde form of retinol produced by oxidation at C-___

Question 27

Conversion of 11-cis retinal to retinoic acid is an irreversible reaction. True or false.

Question 28

An important vitamin that acts as hormone involved in regeneration:

Question 29

Vitamin D is a derivative of which biomolecule ?

Question 30

Activated form of vitamin D is

Question 31

Vitamin D regulates absorption of which ion from intestine and kidney?

Question 32

__________ is converted into cholecalciferol or vitamin D by the action of sunlight.

Question 33

The conversion of 7 dehydrocholestrol into cholecalciferol is an enzyme mediated step in skin . True or false.

Question 34

Which three organs are involved in vitamin D biosynthesis?

Question 35

Deficiency of vitamin D can cause hardening of blood vessels due to which there is deposition of fat and may result in heart attack and also reduced ability to fight infections.

True or false.

Question 36

Vitamin D derivative which acts as hormone.

Question 37

Total number of hydroxyl group present in 1,25 dehydrocholecalciferol :

Question 38

Calcitriol is activated form of ______

Question 39

Name the organ :

1. 7 dehydrocholestrol is converted into cholecalciferol:
2. Cholecalciferol is converted into 25 hydrocholecalciferol:
3. 25 HCC is converted into 1,25 DHCC :

Question 40

Where does the first hydroxylation of cholecalciferol occurs and at which carbon position?

Question 41

Calcitriol is produced in _______

Question 42

Cholecalciferol ——> HCC

This reaction is catalysed by which enzyme?

Question 43

All reaction in vitamin D biosynthesis are enzyme mediated. True or false

Question 44

Second hydroxylation of 25 HCC occurs in ?

Question 45

Which organs can be possibly failed if even after vitamin D supplements, the calcium absorption of a patient is not improved ?

Question 46

Receptors of vitamin D are found in
__________

Answer 46

Cytoplasm

Question 47

Vitamin D controls calcium metabolism by increasing which receptors on intestinal and kidney epithelial cells ?

Question 48

Vitamin D mediated calcium channels are generally expressed in _____ part of kidney.

Question 49

TRPV 5 is found in __________ whereas TRPV 6 is found in ___________.

Question 50

3 hormones involved in calcium metabolism.

Question 51

TRPV stands for __________

Question 52

Which calcium channels are expressed by action of vitamin D on the basolateral surface of intestinal epithelium?

Question 53

Which calcium channels are expressed by action of vitamin D on the luminal side of intestinal epithelium?

Question 54

Translation of which proteins is triggered by vitamin D which help in storage of calcium within the cell and prevent their abnormal rise ?

Question 55

Vitamin D deficiency in children causes __________ while in adults causes __________

Question 56

Characteristics of rickets.

Question 57

Tocopherol is another name for __________

Question 58

Tocopherols is a group of closely related _________(biomolecule)?

Question 59

Vitamin essential for normal reproductive function.

Question 60

All tocopherols are composed of __________&___________.

Question 61

Unlike vitamin A, vitamin E does not contain conjugated hydrocarbon chain and hence cannot act as visual pigment. True or false.

Question 62

Vitamin ____ prevents non enzymatic oxidation in cell (between reduced biomolecules and oxidising cell environment) and thus act as potent antioxidant.

Question 63

Vitamin K consists of _________&______

Question 64

Match the following

Vitamin K1 menadione
Vitamin K2. Phylloquinone
Vitamin K3. Menaquinone

Question 65

Vitamin K form produced by intestinal bacteria :

Question 66

Vitamin K form produced by plant ☘️

Question 67

Synthetic vitamin K is also known as _____________

Question 68

Blood clotting factor protein undergo modification at ________ Amino acid residue to convert into functional form .

Question 69

Blood clotting factor protein undergo modification at glutamate residue to convert into functional form :

Question 70

Blood clotting factor protein undergo modification at glutamate residue to convert into functional form gamma-carboxy glutamate.

The enzyme required for this is __________.

Which vitamin acts as coenzyme?

Question 71

_________ is a synthetic analog of vitamin c that inhibits vitamin K dependent carboxylation of blood clotting factors .

Question 72

How does warfarin act as an anti coagulant ?

Question 73

The only fat soluble vitamin that acts as a coenzyme?