Quick Biochemistry - Vitamins (Section 7)

1
What substance is a starting material for the biological creation of?
Answer
(A)
Vitamin A
2
Which vitamin functions as a powerful protector against damage from other vitamins?
Answer
(B)
Vitamin E
3
In a condition affecting the eyes, which specific chemical transformation of Vitamin D is blocked?
Answer
(B)
1
4
Which of the following compounds does NOT contain the element phosphorus?
Answer
(A)
Riboflavin
5
Which mineral deficiency could lead to symptoms such as seizures and mental disturbances?
Answer
(D)
Magnesium
6
What vitamin is found in rice polishings?
Answer
(D)
Vitamin B12
7
In a disease affecting the nerves, which substance builds up in the bloodstream?
Answer
(C)
Pyruvic acid
8
The characteristic signs of a specific deficiency disease include
Answer
(C)
Diarrhea, dermatitis and dementia
9
A lack of vitamin B6 can result in which blood-related condition?
Answer
(C)
Hypochromic microcytic anemia
10
A notable visual symptom associated with riboflavin deficiency is:
Answer
(B)
Bitot's spots
11
What nutritional element increases in foods that have undergone irradiation?
Answer
(C)
Vitamin E
12
Which substance acts as an anti-vitamin in relation to folic acid?
Answer
(A)
Amethoptesin
13
Which description best fits Thymine?
Answer
(D)
Pyrimidine base
14
What substance counteracts the effects of para-aminobenzoic acid?
Answer
(D)
Sulphonamides
15
Which of the B-group vitamins includes sulfur in its molecular structure?
Answer
(A)
Thiamine
16
In what condition might the presence of excess taurine in urine be observed?
Answer
(A)
Permicious anemia
17
Which three vitamins are crucial for the proper functioning of the nervous system?
Answer
(D)
Thiamine, pyridoxin, vitamin B12
18
Which of the following items is known for its high concentration of vitamin C?
Answer
(D)
Lemon
19
What vitamin plays a role in the coenzyme function during transamination processes?
Answer
(B)
Pyridoxine
20
A deficiency of which vitamin is associated with methylmalonic aciduria?
Answer
(D)
Vitamin B12
21
What health issue arises from a lack of Vitamin C?
Answer
(C)
Night blindness
22
Which scientist's work would be impossible without primer DNA in DNA synthesis?
Answer
(C)
Kornberg
23
Which vitamin is associated with preventing issues related to fertility?
Answer
(C)
Vitamin E
24
Which of the following vitamins does NOT result in cofactors that are phosphorylated in their active state?
Answer
(B)
Vitamin B₁
25
Where is molecular Iron (Fe) primarily stored in the body?
Answer
(A)
Stored in the body in combination with Ferritin
26
Which nutrient can humans most readily go without?
Answer
(C)
Carbohydrate
27
A lack of Vitamin B₁₂ leads to which of these conditions?
Answer
(C)
Pernicious anemia
28
What disease does a significant lack of Vitamin D cause in adults?
Answer
(B)
Osteomalacia
29
Which vitamin deficiency is most probable for someone exclusively eating meat?
Answer
(D)
Vitamin C
30
Which of the following is a correct fact about Vitamin A?
Answer
(C)
It is a component of rhodopsin
31
What substances are essential for the complete activation of pyruvate carboxylase?
Answer
(B)
Acetyl CoA and biotin
32
Which metabolic process utilizes pantothenic acid as a key component of its coenzyme?
Answer
(A)
Acetylation
33
In which type of biochemical processes does biotin play a crucial role?
Answer
(B)
Carboxylation
34
Which of the following vitamins is a building block for coenzyme A?
Answer
(B)
Pantothenate
35
Which vitamin is not a dinucleotide derivative in its active form?
Answer
(A)
Thiamine
36
A deficiency of which vitamin is linked to methylmalonic aciduria?
Answer
(D)
Vitamin B12
37
What illness is caused by a lack of thiamine in the body?
Answer
(D)
Beriberi
38
Which protein interacts with retinol and retinol-binding protein?
Answer
(B)
Prealbumin
39
The deficiency of which nutrient leads to megaloblastic anemia?
Answer
(A)
Folic acid
40
Which vitamin functions as an antioxidant in the body?
Answer
(D)
Vitamin K
41
Which of the following is the chemical name for calcitriol?
Answer
(D)
1,25-dihydroxy cholecalciferol
42
Where does the conversion of 25-hydroxy Vitamin D3 to 1-hydroxy occur in the body?
Answer
(B)
Kidneys
43
In what organ does the body perform 25-hydroxylation of Vitamin D?
Answer
(A)
Liver
44
What substance encourages the hydroxylation of 25-hydroxy cholecalciferol?
Answer
(B)
Panthyroid hormone
45
What protein in raw egg white interferes with nutrient absorption?
Answer
(B)
Avidin
46
Which of the following contains cyanide as part of its structure?
Answer
(A)
Vitamin B12
47
Which vitamin can humans produce on their own?
Answer
(D)
Niacin
48
What is the light-sensitive pigment found in the retina?
Answer
(A)
Rhodopsin
49
What vitamin is also known as the antixerophthalmic vitamin?
Answer
(D)
Vitamin A
50
Which of the following is NOT a typical symptom of Addison's disease?
Answer
(C)
Hypokalemia