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MCQs

Total Questions : 301 | Page 30 of 31 pages
Question 291. The alpha-helix structure was discovered by
  1.    Linus Pauling, Robert Corey
  2.    Herman Branson
  3.    both a and b
  4.    Miller and Harley
 Discuss Question
Answer: Option B. -> Herman Branson
Answer: (b).Herman Branson
Question 292. The process in which an optically active compound is converted into optically inactive compound, is called
  1.    formylation
  2.    amidation
  3.    racemization
  4.    Phosphorylation
 Discuss Question
Answer: Option C. -> racemization
Answer: (c).racemization
Question 293. The linear sequence of amino acids forms
  1.    1° structure
  2.    2° structure
  3.    3° structure
  4.    4° structure
 Discuss Question
Answer: Option A. -> 1° structure
Answer: (a).1° structure
Question 294. The type of bonding in disulfide bridges is
  1.    covalent bonding between R groups of Cysteine amino acids
  2.    ionic bonding
  3.    hydrogen bonding
  4.    polar interactions
 Discuss Question
Answer: Option A. -> covalent bonding between R groups of Cysteine amino acids
Answer: (a).covalent bonding between R groups of Cysteine amino acids
Question 295. Interactions between multiple polypeptide chains forms
  1.    1° structure
  2.    2° structure
  3.    3° structure
  4.    4° structure
 Discuss Question
Answer: Option D. -> 4° structure
Answer: (d).4° structure
Question 296. In beta pleated sheet, the hydrogen bonding is between
  1.    sulfur linkage
  2.    amide group
  3.    polypeptide units of folded sheet
  4.    inside a single sheet
 Discuss Question
Answer: Option C. -> polypeptide units of folded sheet
Answer: (c).polypeptide units of folded sheet
Question 297. 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
Answer: (d).All of these
Question 298. 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
Answer: (d).Asp, Ile, and Pro
Question 299. During successful purification scheme, this may be expected that the
  1.    specific activity increases
  2.    specific activity decreases
  3.    number of proteins in the sample decreases
  4.    both (a) and (c)
 Discuss Question
Answer: Option D. -> both (a) and (c)
Answer: (d).both (a) and (c)
Question 300. 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
Answer: (d).all of the above

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