Quick Biochemistry - Vitamins (Section 6)
1
Which amino acid from the list is a dietary requirement for humans?
2
Which food group has the greatest impact on the specific dynamic action?
3
Why are essential amino acids called 'essential'?
Answer(B)
They need to be obtained from the diet because the human body has difficulty building their carbon chains.
4
What is a positive effect of dietary fiber?
5
What is a likely consequence of an inability to process sucrose?
6
Which sugar is associated with potential intolerance?
7
Which nutrient is found in low quantities in milk?
8
Which macronutrient is present in small amounts in eggs?
9
Which condition is associated with an increased BMR (Basal Metabolic Rate)?
10
Which amino acid is abundant in soyabean proteins?
11
Which amino acid is least abundant in corn and gliadin?
12
What condition results from a lack of thiamine in the diet?
13
Retinol and retinol-binding protein (RBP) associate with which protein?
14
Which deficiency leads to megaloblastic anemia?
15
Which vitamin functions as an antioxidant?
16
What is the chemical structure of calcitriol?
Answer(D)
1,25-diOH cholecalciferol
17
Where does the 1-hydroxylation of 25-OH vitamin D₃ occur?
18
In which organ does 25-hydroxylation of vitamin D₃ take place?
19
What stimulates the hydroxylation of 25-hydroxy cholecalciferol?
20
What substance in raw egg white interferes with nutrient absorption?
21
Which of the following substances contains cyanide?
22
Which vitamin can humans create internally?
23
What light-sensitive substance is found in the retina?
24
Which vitamin helps prevent xerophthalmia?
25
Which of these is not a typical sign of Addison's disease?
26
Gammaxane interferes with the function of which substance?
27
A lack of pyridoxin can cause seizures because it's needed to produce which substance?
28
Sulfa drugs block the use of which nutrient?
29
Which unusual metabolite might cause the nervous system problems in pernicious anemia?
30
Which vitamin is abundant in green, leafy vegetables?
31
What vitamin deficiency can potentially result from using isonicotinic acid hydrazide in tuberculosis treatment?
32
Which molecule is biotin essential for the reaction of CO₂ with?
33
What type of anemia is often associated with a lack of folate?
34
A lack of iron can cause what kind of anemia?
Answer(D)
Hypochromic microcytic anemia
35
Which vitamin's coenzymes are corrinoid coenzymes?
36
What type of protein initially binds to Vitamin B₁₂?
37
What is the extrinsic factor of castle?
38
What is the intrinsic factor of castle?
39
What is the meaning of 'pernicious'?
40
Which molecule is required for the reduction of D-ribonucleotides to D-deoxyribonucleotides in prokaryotes?
41
Which of the following is another name for Biotin?
Answer(A)
Factor that prevents harm from egg whites
42
What is the primary cause of angular stomatosis?
43
What is a key role of Vitamin K, specifically in relation to enzymes?
Answer(A)
It's a cofactor in the production of y carboxyglutamate
44
What substance, when given, will increase prothrombin time?
45
Which vitamin functions as an antioxidant?
46
Which vitamin is easily degraded by light?
47
Which of the following deficiencies is linked to episodes of convulsions?
48
Which vitamin is associated with the development of metastatic classification when consumed in excess?
49
What substance is an anti-vitamin that opposes the action of para-aminobenzoic acid?
50
Which of the following is reported as a consequence of multiple pantothenic acid deficiencies in humans?
