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MCQs

Total Questions : 301 | Page 4 of 31 pages
Question 31. Serine and threonine are polar amino acids due to
  1.    reactive hydroxyl group in the side chain
  2.    reactive alcoholic group in the side chain
  3.    reactive keto group in the side chain
  4.    reactive aldehyde group in the side chain
 Discuss Question
Answer: Option A. -> reactive hydroxyl group in the side chain
Answer: (a).reactive hydroxyl group in the side chain
Question 32. How many different amino acids are there?
  1.    3
  2.    20
  3.    100
  4.    An infinite number
 Discuss Question
Answer: Option B. -> 20
Answer: (b).20
Question 33. What is the product of the catabolic breakdown of Alanine?
  1.    Fumarate
  2.    Oxaloacetate
  3.    Pyruvate
  4.    Malate
 Discuss Question
Answer: Option C. -> Pyruvate
Answer: (c).Pyruvate
Question 34. Stereo chemical configuration of all a-amino acids derived from proteins is
  1.    L
  2.    D
  3.    L and D
  4.    None of these
 Discuss Question
Answer: Option A. -> L
Answer: (a).L
Question 35. Which of the following is not the hydrophobic and aromatic amino acid?
  1.    Phenylalanine
  2.    Tyrosine
  3.    Tryptophan
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Answer: (d).None of these
Question 36. On addition of alkali, zwitterion ion will reform
  1.    amine
  2.    carboxylic group
  3.    alcohol
  4.    carbonic acid
 Discuss Question
Answer: Option A. -> amine
Answer: (a).amine
Question 37. The group which may vary in different amino acids is
  1.    R-group
  2.    P-group
  3.    S-group
  4.    N-group
 Discuss Question
Answer: Option A. -> R-group
Answer: (a).R-group
Question 38. A link between amino acid molecules in a polypeptide chain by condensation reaction is called
  1.    peptide bond
  2.    poly peptide linkage
  3.    diol linkage
  4.    amine linkage
 Discuss Question
Answer: Option A. -> peptide bond
Answer: (a).peptide bond
Question 39. The general formula for 2 amino carboxylic acid is
  1.    R-CH(NH₂)COOH
  2.    R-CHCOOH
  3.    R-CH(NH₂)
  4.    R-CH
 Discuss Question
Answer: Option A. -> R-CH(NH₂)COOH
Answer: (a).R-CH(NH₂)COOH
Question 40. 2-amino carboxylic acid is building block in manufacturing of
  1.    fats
  2.    proteins
  3.    vitamins
  4.    minerals
 Discuss Question
Answer: Option B. -> proteins
Answer: (b).proteins

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