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MCQs

Total Questions : 173 | Page 16 of 18 pages
Question 151. . Protein fluorescence arises primarily from which residue?
  1.    Arginine
  2.    Tryptophan
  3.    Tyrosine
  4.    Phenylalanine
 Discuss Question
Answer: Option B. -> Tryptophan
Question 152. . Which of the following amino acid is known as half-cystine residue?
  1.    Cysteine
  2.    Isoleucine
  3.    Valine
  4.    Histidine
 Discuss Question
Answer: Option A. -> Cysteine
Question 153. . Which of the following is not an essential amino acid?
  1.    Aspartic acid
  2.    Glutamic acid
  3.    Glycine
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 154. . What is the product of the catabolic breakdown of Alanine?
  1.    Fumarate
  2.    Oxaloacetate
  3.    Pyruvate
  4.    Malate
 Discuss Question
Answer: Option C. -> Pyruvate
Question 155. . Which of the following is not a sensible grouping of amino acids based on their polarity properties?
  1.    Ala, Leu, and Val
  2.    Arg, His, and Lys
  3.    Phe, Trp, and Tyr
  4.    Asp, Ile, and Pro
 Discuss Question
Answer: Option D. -> Asp, Ile, and Pro
Question 156. . Proteins and macromolecular structures take on their higher order structures
  1.    by self-assembly
  2.    with the help of molecular chaperons
  3.    with the help of precursor sequences that are removed from the final structures
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 157. . How many different amino acids are there?
  1.    3
  2.    20
  3.    100
  4.    An infinite number
 Discuss Question
Answer: Option B. -> 20
Question 158. . Which of the following amino acid contain an imidazolium moiety?
  1.    Alanine
  2.    Valine
  3.    Cysteine
  4.    Histidine
 Discuss Question
Answer: Option D. -> Histidine
Question 159. . Amino acids required in the human diet and not synthesized by the body are called
  1.    specialized
  2.    trace
  3.    essential
  4.    accessory
 Discuss Question
Answer: Option C. -> essential
Question 160. . The sequence of letters 'WYQN' will represent
  1.    Tryptophan, tyrosine, glutamic acid, asparagine
  2.    Tryptophan, tyrosine, glutamine, asparagine
  3.    Tryptophan, glutamine, tryptophan, asparagine
  4.    Glutamine, tyrosine, tryptophan, aspartic acid
 Discuss Question
Answer: Option B. -> Tryptophan, tyrosine, glutamine, asparagine

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