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MCQs

Total Questions : 150 | Page 11 of 15 pages
Question 101. Gibbs is a web-based program that uses the Gibbs sampling approach to look for _____ gap-free segments for either DNA or protein sequences.
  1.    short, partially conserved
  2.    long, partially conserved
  3.    long, conserved
  4.    short, not conserved
 Discuss Question
Answer: Option A. -> short, partially conserved
Answer: (a).short, partially conserved
Question 102. _______ is an interactive program for generating sequence logos.
  1.    EMBOSS
  2.    WebLogo
  3.    LOGOLY
  4.    BLAST
 Discuss Question
Answer: Option B. -> WebLogo
Answer: (b).WebLogo
Question 103. Conserved positions have _____ residues and bigger symbols.
  1.    fewer
  2.    more
  3.    maximum
  4.    minimum
 Discuss Question
Answer: Option A. -> fewer
Answer: (a).fewer
Question 104. A multiple sequence alignment or a motif is often represented by a graphic representation called a ______
  1.    logo
  2.    motto
  3.    algorithm
  4.    algo
 Discuss Question
Answer: Option A. -> logo
Answer: (a).logo
Question 105. The overall height of a logo position reflects how conserved the position is, and the _____ of each letter in a position reflects the _______ of the residue in the alignment.
  1.    height, relative frequency
  2.    width, relative frequency
  3.    height, amplitude
  4.    width, amplitude
 Discuss Question
Answer: Option A. -> height, relative frequency
Answer: (a).height, relative frequency
Question 106. Use of the dynamic programming method requires a scoring system for the comparison of symbol pairs, and a scheme for GAP penalties.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 107. The matrices PAM250 and BLOSUM62 contain _______
  1.    positive and negative values
  2.    positive values only
  3.    negative values only
  4.    neither positive nor negative values, just the percentage
 Discuss Question
Answer: Option A. -> positive and negative values
Answer: (a).positive and negative values
Question 108. After the derivation, the outputs of the dynamic programming are the ratios are called even scores.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 109. The higher is the score in the alignment _________
  1.    the more significant is the alignment
  2.    or the less it resembles alignments in related proteins
  3.    the less significant is the alignment
  4.    the less it aligns with the related protein sequence
 Discuss Question
Answer: Option A. -> the more significant is the alignment
Answer: (a).the more significant is the alignment
Question 110. Gaps are added to the alignment because it ______
  1.    increases the matching of identical amino acids at subsequent portions in the alignment
  2.    increases the matching of or dissimilar amino acids at subsequent portions in the alignment
  3.    reduces the overall score
  4.    enhances the area of the sequences
 Discuss Question
Answer: Option A. -> increases the matching of identical amino acids at subsequent portions in the alignment
Answer: (a).increases the matching of identical amino acids at subsequent portions in the alignment

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