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MCQs

Total Questions : 301 | Page 8 of 31 pages
Question 71. Amino acids that can be found in proteins are
  1.    A- amino acids
  2.    B- amino acids
  3.    L- amino acids
  4.    D- amino acids
 Discuss Question
Answer: Option C. -> L- amino acids
Answer: (c).L- amino acids
Question 72. Amino acids in which -NH₃ is attached to the carbon atom neighboringto -COOH group are
  1.    α amino acids
  2.    β amino acids
  3.    γ amino acids
  4.    none of above
 Discuss Question
Answer: Option A. -> α amino acids
Answer: (a).α amino acids
Question 73. The D symbol indicates the rotation in
  1.    anticlockwise rotation
  2.    clockwise rotation
  3.    spin up
  4.    spin down
 Discuss Question
Answer: Option B. -> clockwise rotation
Answer: (b).clockwise rotation
Question 74. The two symbols associated with absolute configuration
  1.    R
  2.    S
  3.    both a and b
  4.    L and D
 Discuss Question
Answer: Option C. -> both a and b
Answer: (c).both a and b
Question 75. The other names for citric acid cycle are
  1.    kerb's cycle
  2.    tricarboxylic acid cycle
  3.    both a and b
  4.    kerbs cycle
 Discuss Question
Answer: Option C. -> both a and b
Answer: (c).both a and b
Question 76. Which amino acids would most likely reside in the membrane-anchoring domain of a membrane embedded protein?
  1.    Isoleucine, valine and phenylalanine
  2.    Phenylalanine, valine, and aspartate
  3.    Leucine, threonine, and lysine
  4.    Lysine, arginine and histidine
 Discuss Question
Answer: Option A. -> Isoleucine, valine and phenylalanine
Answer: (a).Isoleucine, valine and phenylalanine
Question 77. Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?
  1.    Asparagine & Glutamine
  2.    Leucine & Glycine
  3.    Histidine & Lysine
  4.    Aspartate & Glutamate
 Discuss Question
Answer: Option D. -> Aspartate & Glutamate
Answer: (d).Aspartate & Glutamate
Question 78. An essential amino acid is one that
  1.    is essentially easy to synthesize
  2.    is essential to flagella motion
  3.    the body cannot synthesize
  4.    the body can synthesize under essential conditions
 Discuss Question
Answer: Option C. -> the body cannot synthesize
Answer: (c).the body cannot synthesize
Question 79. D-Alanine and L-Alanine are technically known as
  1.    anomers
  2.    enantiomers
  3.    epimers
  4.    polymer
 Discuss Question
Answer: Option B. -> enantiomers
Answer: (b).enantiomers
Question 80. In a polypeptide average mass of an amino acid residue is
  1.    110 daltons
  2.    118 daltons
  3.    80 daltons
  4.    150 daltons
 Discuss Question
Answer: Option A. -> 110 daltons
Answer: (a).110 daltons

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