Biochemistry- Nutritional Chemistry Flashcards Preview

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Flashcards in Biochemistry- Nutritional Chemistry Deck (60)
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1

Vitamin B1 is known as what?

Thiamin

2

Vitamin B2 is known as what?

Riboflavin

3

Vitamin B3 is known as what?

Niacin/ nicotinic acid

4

Vitamin B5 is known as what?

Pantothenic acid

5

Vitamin B6 is known as what?

Pyridoxine

6

Vitamin B12 is known as what?

Cobalamin

7

What is the active form of B1/thiamin called?

Thiamin pyrophosphate

8

Vitamin B1 requires what mineral?

magnesium

9

Transketolase in the hexose shunt requires what vitamin?

Thiamin/ B1

10

Oxidative carboxylation in the pyruvate dehydrogenase complex needs what vitamin?

B1/ thiamin

11

Where is B1 absorbed?

jejunum

12

FAD and FMN are active constituents of what vitamin?

B2- Riboflavin

13

Where is riboflavin absorbed?

Duodenum/Jejunum

14

What vitamins are used in oxidation-reduction reactions/ electron transfer reactions (dehydrogenase enzymes)

B3 and B2 (niacin and riboflavin)

15

What form of niacin is used in synthesis pathways?

NADPH

16

NAD and NADH are the oxidized and reduced forms of what vitamin?

B3/Niacin

17

What amino acid can form niacin?

Tryptophan

18

What is the active form of pantothenic acid/B5?

Coenzyme A

19

Where is B5/Pantothenic acid absorbed?

Intestinal mucosa/ brush border

20

Which vitamin is essential for reactions using CoA?

B5

21

Pyridoxal phosphate is the active form of what vitamin?

B6/ pyridoxine

22

What mineral is needed to activate B6?

magnesium

23

What vitamin plays a role in transamination reactions?

B6

24

Which vitamin is essential for nucleotide synthesis and for single carbon transfers?

Folic Acid

25

What vitamin serves as CO2 carrier in carboxylation reactions?

Biotin

26

What vitamin is needed as a cofactor to activate folic acid?

Cobalamin/ B12

27

What is the first active form of B12?

Methylcobolamine

28

List some of the biochemical activities of Vitamin C

reducing agent
cofactor for hydroxylation reactions eg. proline, dopamine and NE/Epi synthesis
carnitine synthesis,
Enhances Iron mobilization, Bile acid formation
influence on cholesterol metabolism

29

What is the active form of Vitamin A in the blood?

Retinol

30

What i the active form of Vitamin A in the eyes?

Retinal