Bio Chemistry MCQs with answer

Bio Chemistry MCQs with answer

01. After accounting for SDA, the net gain of energy from 25 gm of proteins is about
(A) 70 kcal
(B) 100 kcal
(C) 130 kcal
(D) 200 kcal

02. After accounting for SDA, the net gain of energy from 25 gm of carbohydrates is about
(A) 70 kcal
(B) 95 kcal
(C) 100 kcal
(D) 105 kcal

03. After accounting for SDA, the net gain of energy from 100 gm of fat is about
(A) 600 kcal
(B) 780 kcal
(C) 900 kcal
(D) 1020 kcal

04. If proteins, carbohydrates and fats are consumed together:
(A) The total SDA is the sum of individual SDAs of proteins, carbohydrates and fats
(B) The total SDA is more than the sum of individual SDAs of proteins, carbohydrates and fats
(C) Carbohydrates and fats lower the SDA of proteins
(D) Proteins raise the SDA of carbohydrates and fats

05. After calculating the energy requirement of a person:
(A) 10% kcal are subtracted on account of SDA
(B) 10% kcal are added on account of SDA
(C) 20% kcal are subtracted on account of SDA
(D) 20% kcal are subtracted on account of SDA

06. The recommended energy intake for an adult sedentary Indian man is
(A) 1,900 kcal/day
(B) 2,400 kcal/day
(C) 2,700 kcal/day
(D) 3,000 kcal/day

07. The recommended energy intake for an adult sedentary Indian woman is
(A) 1,900 kcal/day
(B) 2,200 kcal/day
(C) 2,400 kcal/day
(D) 2,700 kcal/day

08. During pregnancy, the following should be added to the calculated energy requirement:
 (A) 300 kcal/day
 (B) 500 kcal/day
 (C) 700 kcal/day
 (D) 900 kcal/day

09. During first six months of lactation, the following increment in energy intake is recommended: (A) 200 kcal/day
 (B) 300 kcal/day
 (C) 550 kcal/day
 (D) 1,000 kcal/day

10. The proximate principles of diet are
(A) Vitamins and minerals
(B) Proteins
(C) Carbohydrates and fats
(D) Carbohydrates, fats and proteins

11. The limiting amino acid in wheat is
(A) Leucine
(B) Lysine
(C) Cysteine
(D) Methionine

12. The limiting amino acid in pulses is
(A) Leucine
(B) Lysine
(C) Tryptophan
(D) Methionine

13. Maize is poor in
(A) Lysine
(B) Methionine
(C) Tryptophan
(D) Lysine and tryptophan

14. The percentage of ingested protein/ nitrogen absorbed into blood stream is known as
(A) Net protein utilisation
(B) Protein efficiency ratio
(C) Digestibility coefficient
(D) Biological value of protein

15. Biological value of a protein is
(A) The percentage of ingested protein/nitrogen absorbed into circulation
(B) The percentage of ingested protein/nitrogen in the body
(C) The percentage of ingested protein utilised for protein synthesis in the body
(D) The gain in body weight (gm) per gm of protein ingested

16. Net protein utilisation depends upon
(A) Protein efficiency ratio
(B) Digestibility coefficient
(C) Digestibility coefficient and protein efficiency ratio
(D) Digestibility coefficient and biological value

17. The gain in body weight (gm) per gm of protein ingested is known as
(A) Net protein utilisation
(B) Protein efficiency ratio
(C) Digestibility coefficient
(D) Biological value of protein

18. The following is considered as reference standard for comparing the nutritional quality of proteins:
(A) Milk proteins
(B) Egg proteins
(C) Meat proteins
(D) Fish proteins

19. Biological value of egg proteins is about
(A) 70 %
(B) 80 %
(C) 86 %
(D) 94 %

20. The following has the highest protein efficiency ratio:
(A) Milk proteins
(B) Egg proteins
(C) Meat proteins
(D) Fish proteins

21. The following has the lowest protein efficiency ratio:
(A) Maize proteins
(B) Wheat proteins
(C) Milk proteins
(D) Rice proteins

22. Protein content of egg is about
(A) 10%
(B) 13%
(C) 16%
(D) 20%

23. Protein content of meat is about
(A) 10%
(B) 13%
(C) 16%
(D) 20%

24. Protein content of rice is about
(A) 7%
(B) 12%
(C) 15%
(D) 20%

25. The calorific value of wheat is about
(A) 2.5 kcal/gm
(B) 3.5 kcal/gm
(C) 4.5 kcal/gm
(D) 5.5 kcal/gm

26. For vegetarians, pulses are an important source of
(A) Carbohydrates
(B) Proteins
(C) Fat
(D) Iron

27. The amino acids present in pulses can supplement the limiting amino acids of
(A) Cereals
(B) Milk
(C) Fish
(D) Nuts and beans

28. Milk is a good source of
 (A) Proteins, calcium and iron
(B) Proteins, calcium and ascorbic acid
 (C) Proteins, lactose and retinol
 (D) Proteins, lactose and essential fatty acids

29. Milk is a good source of all of the following except
 (A) Essential amino acids
(B) Vitamin C
(C) Galactose
 (D) Calcium and phosphorous

30. Milk is poor in
(A) Cholesterol
(B) Retinol
(C) Calcium
(D) Iron

31. Egg is rich in all of the following except
(A) Cholesterol
(B) Saturated fatty acids
(C) Ascorbic acid
(D) Calcium

32. A phosphoprotein present in egg is
(A) Casein
(B) Albumin
(C) Ovoglobulin
(D) Ovovitellin

33. Consumption of raw eggs can cause deficiency of
(A) Calcium
(B) Lipoic acid
(C) Biotin
(D) Vitamin A

34. Egg is poor in
(A) Essential amino acids
(B) Carbohydrates
(C) Avidin
(D) Biotin

35. Cholesterol is present in all the following except
(A) Milk
(B) Fish
(C) Egg white
(D) Egg yolk

36. Meat is rich in all of the following except
(A) Iron
(B) Fluorine
(C) Copper
(D) Zinc

37. Kwashiorkor occurs when the diet is severely deficient in
(A) Iron
(B) Calories
(C) Proteins
(D) Essential fatty acids

38. Clinical features of Kwashiorkor include all of the following except
(A) Mental retardation
(B) Muscle wasting
(C) Oedema
 (D) Anaemia

39. Kwashiorkor usually occurs in
(A) The post-weaning period
(B) Pregnancy
(C) Lactation
(D) Old age

40. Marasmus occurs from deficient intake of
(A) Essential amino acids
(B) Essential fatty acids
(C) Calories
(D) Zinc

41. Marasmus differs from Kwashiorkor in the which of these following respect
(A) Mental retardation occurs in kwashiorkor but not in marasmus
(B) Growth is retarded in kwashiorkor but not in marasmus
(C) Muscle wasting occurs in marasmus but not kwashiorkor
(D) Subcutaneous fat disappears in marasmus but not in kwashiorkor


42. Bence-Jones proteins possess all the following properties except
(A) They are dimers of light chains
(B) Their amino acids sequences are identical
(C) Their N-terminal halves have variable amino acid sequences
(D) Their C-terminal halves have constant amino acid sequences

43 A Zwitterion is
(A) Positive ion
(B) Negative ion
(C) Both (A) and (C)
(D) None of these