Explore topic-wise MCQs in Bioinformatics.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Bioinformatics knowledge and support exam preparation. Choose a topic below to get started.

1.

Z-score describes the number of standard deviations from the mean score for the database search.

A. True
B. False
Answer» B. False
Discussion
2.

FASTA doesn’t use bit scores.

A. True
B. False
Answer» C.
Discussion
3.

FASTX, which compares a protein query sequence to a translated DNA database.

A. True
B. False
Answer» C.
Discussion
4.

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.

A. subtracting, second, first
B. adding, second, first
C. adding, first, second
D. subtracting, first, second
Answer» E.
Discussion
5.

The first step in FASTA alignment id to arrange the sequences in matrices’ rows and columns in order to be analyzed.

A. True
B. False
Answer» C.
Discussion
6.

Which of the following is not correct about FASTA?

A. Its stands for FAST ALL
B. It was in fact the first database similarity search tool developed, preceding the development of BLAST
C. FASTA uses a ‘hashing’ strategy to find matches for a short stretch of identical residues with a length of k
D. The string of residues is known as blocks
Answer» E.
Discussion
7.

Z-SCORE_DESCRIBES_THE_NUMBER_OF_STANDARD_DEVIATIONS_FROM_THE_MEAN_SCORE_FOR_THE_DATABASE_SEARCH.?$

A. True
B. False
Answer» B. False
Discussion
8.

FASTA doesn’t use bit scores?#

A. True
B. False
Answer» C.
Discussion
9.

FASTX, which compares a protein query sequence to a translated DNA database?

A. True
B. False
Answer» C.
Discussion
10.

The web-based FASTA program is offered by the European Bioinformatics Institute.

A. True
B. False
Answer» B. False
Discussion
11.

The last step is to perform a statistical evaluation of the final alignment as in BLAST, which produces the E-value.

A. True
B. False
Answer» B. False
Discussion
12.

In FASTA, neighboring high-scoring segments along the same diagonal are selected and joined to form a single alignment.

A. True
B. False
Answer» B. False
Discussion
13.

The second step in FASTA is to narrow down the high similarity regions between the two sequences.

A. True
B. False
Answer» B. False
Discussion
14.

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.

A. subtracting, second, first
B. adding, second, first
C. adding, first, second
D. subtracting, first, second
Answer» E.
Discussion
15.

The first step in FASTA alignment id to arrange the sequences in matrices’ rows and columns in order to be analyzed.$

A. True
B. False
Answer» C.
Discussion
16.

Which of the following is not a correct about FASTA?

A. Its stands for FAST ALL
B. It was in fact the first database similaritysearch tool developed, preceding the development of BLAST
C. FASTA uses a ‘hashing’ strategy to find matches for a short stretch of identical residues with a length of k
D. The string of residues is known as blocks
Answer» E.
Discussion