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MCQs

Total Questions : 50 | Page 2 of 5 pages
Question 11. Which of the following is not correct about FASTA?
  1.    Its stands for FAST ALL
  2.    It was in fact the first database similarity search tool developed, preceding the development of BLAST
  3.    FASTA uses a ‘hashing’ strategy to find matches for a short stretch of identical residues with a length of k
  4.    The string of residues is known as blocks
 Discuss Question
Answer: Option D. -> The string of residues is known as blocks
Answer: (d).The string of residues is known as blocks
Question 12. The first step in FASTA alignment id to arrange the sequences in matrices’ rows and columns in order to be analyzed.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 13. The positional difference for each word between the two sequences is obtained by ________ the position of the ______ sequence from that of the _______ sequence and is expressed as the offset.
  1.    subtracting, second, first
  2.    adding, second, first
  3.    adding, first, second
  4.    subtracting, first, second
 Discuss Question
Answer: Option D. -> subtracting, first, second
Answer: (d).subtracting, first, second
Question 14. In FASTA, neighboring high-scoring segments along the same diagonal are selected and joined to form a single alignment.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 15. The second step in FASTA is to narrow down the high similarity regions between the two sequences.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 16. The last step is to perform a statistical evaluation of the final alignment as in BLAST, which produces the E-value.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 17. FASTX, which compares a protein query sequence to a translated DNA database.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 18. The web-based FASTA program is offered by the European Bioinformatics Institute.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 19. Z-score describes the number of standard deviations from the mean score for the database search.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 20. FASTA doesn’t use bit scores.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False

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