Questions and answers for exam Preparation

MCQs

Total Questions : 150 | Page 5 of 15 pages

Question 41. By calculating alignment scores of a large number of ______ sequence pairs, a distribution model of the ______ sequence scores can be derived.

related, randomized
unrelated, randomized
unrelated, unrandomized
related, unrandomized

Discuss Question

Answer: Option B. -> unrelated, randomized
Answer: (b).unrelated, randomized

Question 42. Many studies have demonstrated that the distribution of similarity scores assumes a peculiar shape that resembles a highly skewed normal distribution with a long tail on one side. The distribution matches the _______

Gumble elective value distribution
Gumble extreme void distribution
Gumble end value distribution
Gumble extreme value distribution

Discuss Question

Answer: Option D. -> Gumble extreme value distribution
Answer: (d).Gumble extreme value distribution

Question 43. Which of the following is a part of the statistical test of sequences?

An optimal alignment between two chosen sequences is obtained at the end
Unrelated sequences of the same length are then generated through a randomization process
Unrelated sequences of the different length are then generated through a randomization process
Related sequences of the same length are then generated through a randomization process

Discuss Question

Answer: Option B. -> Unrelated sequences of the same length are then generated through a randomization process
Answer: (b).Unrelated sequences of the same length are then generated through a randomization process

Question 44. The truly statistically significant sequence alignment will be able to provide evidence of homology between the sequences involved.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 45. In the statistical test, randomization process in which one of the two given sequences is randomly shuffled.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 46. While scanning for similarities in motifs, how regular expressions’ techniques work?

It represents a sequence family by a string of characters and further compares them
An algorithm similar to dynamic programming is used
Dot matrix analysis is used in this type of sequence analysis
Matrix analysis methods are used in this type

Discuss Question

Answer: Option A. -> It represents a sequence family by a string of characters and further compares them
Answer: (a).It represents a sequence family by a string of characters and further compares them

Question 47. In regular expressions, which of the following pair of pattern is wrongly matched with its significance?

[ ] – Or
{ } – Not
( ) – Repeats
Z – Any

Discuss Question

Answer: Option D. -> Z – Any
Answer: (d).Z – Any

Question 48. Which of the following best defines regular expressions?

They are made up of terms, operators and modifiers
They describe string or set of strings to find matching patterns
They are strictly restricted to alignment and corresponding score
They consist of set of rules for the connotations of various amino acid residues

Discuss Question

Answer: Option B. -> They describe string or set of strings to find matching patterns
Answer: (b).They describe string or set of strings to find matching patterns

Question 49. In regular expressions, which of the following pair of pattern is wrongly matched with its significance?