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Essential Biochemistry - Vitamins (Section 4)

1
What is the main food source of Riboflavin?
Answer
(C)
Milk
2
What disease is caused by lack of thiamine?
Answer
(B)
Beriberi
3
What does Vitamin B12, in the form of methylcobalamin, act as a coenzyme for?
Answer
(C)
Both a and b
4
What is the primary role of Riboflavin in the body?
Answer
(A)
Energy production
5
Which vitamin is essential for the synthesis of NAD and NADP?
Answer
(C)
Vitamin B3
6
Which of the following are functions of PLP (Pyridoxal phosphate)?
Answer
A
B
C
7
Which vitamin can be synthesized from tryptophan?
Answer
(C)
B3
8
What is the main function of Pantothenic acid (Vitamin B5)?
Answer
(D)
All of the above
9
What are the four Ds of pellagra?
Answer
A
B
C
10
Pellagra occurs due to deficiency of:
Answer
(B)
Niacin
11
Which of the following is not a function of Vitamin B1?
Answer
(B)
Synthesis of nucleic acids
12
Which vitamin is often associated with 'Wernicke-Korsakoff syndrome' in alcoholics?
Answer
(A)
Vitamin B1
13
Which of the following is NOT a water-soluble vitamin?
Answer
(C)
Vitamin A
14
What is the active form of Vitamin B6 that functions as a coenzyme?
Answer
(B)
Pyridoxal 5'-phosphate (PLP)
15
Which process is affected due to the deficiency of Vitamin B12?
Answer
(C)
DNA synthesis
16
Precursor of CoA is:
Answer
(D)
Pantothenic acid
17
What is the main source of Pantothenic acid?
Answer
(A)
Meat, Grains and egg yolk
18
What is the role of pyridoxal phosphate in amino acid metabolism?
Answer
(B)
Amino acid transamination
19
Antihemorrhagic vitamin is:
Answer
(C)
Vitamin K
20
What vitamin is involved in the carboxylation of pyruvate to oxaloacetate?
Answer
(B)
Vitamin B7
21
What is the role of FAD (flavin adenine dinucleotide) in biochemical reactions?
Answer
(A)
Participates in oxidation-reduction reactions
22
Which of the following is the precursor for the synthesis of the NAD+ and NADP+ coenzymes?
Answer
(B)
Niacin
23
Which of the following vitamins would most likely become deficient in a person who developed a completely vegetarian lifestyle?
Answer
(C)
Cobalamin
24
Which vitamin is involved in the metabolism of amino acids?
Answer
(C)
B6
25
What is the recommended dietary allowance (RDA) for adults for Vitamin B12?
Answer
(A)
7 mcg
26
Beriberi is a deficiency disease caused by a lack of which vitamin?
Answer
(B)
Vitamin B1
27
What are some of the key signs of pellagra?
Answer
A
B
C
28
What are the functions of Vitamin A in the body?
Answer
A
B
C
D
29
Which vitamin is a component of coenzyme A (CoA)?
Answer
(C)
Vitamin B5
30
The main dietary sources of Vitamin C are?
Answer
(A)
Vegetables and fruits
31
Which of the following is a key function of ascorbic acid (Vitamin C)?
Answer
(A)
Collagen biosynthesis
32
Which of the following is a clinical manifestation of vitamin B1 deficiency (Beriberi)?
Answer
(B)
Neurological problems
33
The symptoms of Hypervitaminosis D include:
Answer
A
B
C
D
34
Which vitamin is crucial for the normal function of the nervous system?
Answer
(A)
Vitamin B1
35
Which of the following reactions is/are catalyzed by PLP (Pyridoxal phosphate)?
Answer
A
B
C
D
36
All of the following vitamins have antioxidant property, except:
Answer
(D)
Cholecalciferol
37
What is the role of thiamine pyrophosphate (TPP) in carbohydrate metabolism?
Answer
(B)
Acts as a cofactor in pyruvate dehydrogenase complex
38
Which vitamin deficiency is associated with pellagra?
Answer
(C)
Vitamin B3
39
Which condition is associated with excessive alcohol consumption and thiamine deficiency?
Answer
(C)
Wernicke-Korsakoff syndrome
40
What is the function of CoA?
Answer
(A)
Carrying acyl groups
41
The active forms of Niacin are:
Answer
(A)
Nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP)
42
Which is the active form of vitamin B7?
Answer
(A)
Biotin
43
Which of the following reactions requires pyridoxal phosphate (PLP) as a coenzyme?
Answer
(B)
The deamination of amino acids
44
Which of the following is a function of pyridoxal phosphate?
Answer
A
B
45
What is the major function of Vitamin K?
Answer
(A)
Blood coagulation
46
The formation of carnitine requires:
Answer
(B)
Vitamin C
47
Which of the following foods is a good source of riboflavin?
Answer
(B)
Milk and dairy products
48
What is the relationship between the deficiency of Vitamin B1 and chronic alcohol consumption?
Answer
(C)
Alcohol impairs B1 absorption and increases its excretion
49
What is the role of NAD+ and NADP+ in the body?
Answer
(B)
Act as coenzymes in oxidation-reduction reactions
50
Which disease is associated with Niacin deficiency?
Answer
(B)
Pellagra