Water Soluble Vitamins

Question 1

Coenzymes are carriers of functional groups which are to be added or removed by an enzyme. True or false.

Question 2

Vitamin B1 is chemically composed of __________&_________

Question 3

In vitamin B1 ,

Pyrimidine ring and thiazole ring is linked by _______

Question 4

Active form of vitamin B 1

Question 5

Thiamine+ _______—-> thiamine pyrophosphate

Question 6

Reactive carbon of vitamin B1 is located on ______ ring .

Question 7

Vitamin B1 is an energy releasing vitamin. The energy releasing bond of vitamin B1 is _________

Question 8

Thiamine pyrophosphate acts as a coenzyme and is a carrier of ______ group .

Question 9

Thiamine pyrophosphate is associated with ___________ metabolism.

Question 10

In most decarboxylation reactions , which vitamin acts as a coenzyme?

Question 11

Beri beri is a disease caused due to deficiency of ____________

Question 12

_________ ia a syndrome caused due to chronic alcoholism resulting in poor absorption of vitamin B1.

Question 13

Symptoms of beri beri ?

Question 14

Vitamin B 2 is also known as ________

Question 15

Riboflavin is composed of __________&____________

Question 16

Riboflavin is a precursor of which two important coenzymes ?

Question 17

Sugar alcohol found in riboflavin:

Question 18

FMN and FAD are actually nucleotides with sugar and N base and phosphate group. True or false

Question 19

Riboflavin is composed of isoalloxaxine ring and sugar alcohol i.e ribitol linked via non covalent interaction. True or false

Question 20

FMN contains _________+ __________+___________ thereby making it a nucleotide.

Question 21

In addition of __________ to riboflavin it is converted into FMN.

Question 22

FMN stands for _________

FAD stands for ___________

Question 23

In FAD , “dinucleotide” refers to 1 nucleotide of flavin and 1 nucleotide of adenine (AMP) . True or false

Question 24

FAD is composed of ________+_________

Question 25

On addition of _________ to FMN , FAD is formed.

Question 26

FAD - FMN = ________

Question 27

Both FAD and FMN are coenzymes and act as carriers of atleast ________and maximum __________.

Question 28

Both FAD and FMN have different electron and proton accepting/donating capacity. True or false.

Question 29

On addition of 1phosphate group to riboflavin on action of enzyme _________, FMN is formed.

Question 30

On addition of 1AMP to FMN , FAD is formed . Which enzyme is involved in this reaction?

Question 31

Conversion n of riboflavin to FMN and FMN to FAD are reversible reactions . True or false.

Question 32

FMN on action of which enzyme can be converted into riboflavin?

Question 33

FAD on action of which enzyme can be converted into FMN?

Question 34

Which group in particular is responsible for accepting or donating hydrogen atoms in both FAD and FMN.

Question 35

Riboflavin deficiency symptoms include:

Question 36

Smooth and dark appearance of tongue due to deficiency of riboflavin is called __________

Question 37

Vitamin B3 also known as __________.

Question 38

Both vitamin B3 and B6 are derivatives of ____________.

Question 39

Niacin occurs in only one biologically active form , NAD. True or false.

Question 40

_______&________ are active forms of niacin involved in variety of oxidative -reductive reactions in which they act as electron carrier.

Question 41

NAD is composed of _______&______

Question 42

NAD is composed of nicotinamide phosphate and AMP linked via _______

Question 43

NAD+ - AMP = ________