Practice Questions

TLS Online TPP Program

#Question id: 11204

Why do Na+ ions enter the cell when voltage-gated Na+ channels are opened in neurons?

#Part-B Specialized Branches in Biotechnology

because the Na+ concentration is much lower outside the cell than it is inside
because the Na+ ions are actively transported by the sodium-potassium pump into the cell
because the Na+ concentration is much higher outside the cell than it is inside, and the Na+ ions are attracted to the negatively charged interior
because the Na+ concentration is much higher outside the cell than it is inside, and the Na+ ions are actively transported by the sodium-potassium pump into the cell

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TLS Online TPP Program

#Question id: 14136

#Part-B Specialized Branches in Biotechnology

Which of the following statement is incorrect about global alignment?

(A) Global alignment is based on the Needleman–Wunsch algorithm.

(B) In Global alignment algorithm, an optimal alignment is obtained over the entire lengths of the two sequences.

(C) It is only suitable for aligning two closely related sequences that are of the same length.

(D) GAP is a web-based pairwise global alignment program.

TLS Online TPP Program

#Question id: 14136

#Part-A Aptitude & General Biotechnology

Which of the following statement is incorrect about global alignment?

(A) Global alignment is based on the Needleman–Wunsch algorithm.

(B) In Global alignment algorithm, an optimal alignment is obtained over the entire lengths of the two sequences.

(C) It is only suitable for aligning two closely related sequences that are of the same length.

(D) GAP is a web-based pairwise global alignment program.

TLS Online TPP Program

#Question id: 14137

#Part-B Specialized Branches in Biotechnology

Consider the following alignment of two DNA sequences:

Assuming an affine gap scoring scheme of an identity matrix for substitution, a gap initiation penalty of 1 and a gap extension penalty of 0.1, the score of the alignment is _________

TLS Online TPP Program

#Question id: 14137

#Part-A Aptitude & General Biotechnology

Consider the following alignment of two DNA sequences:

Assuming an affine gap scoring scheme of an identity matrix for substitution, a gap initiation penalty of 1 and a gap extension penalty of 0.1, the score of the alignment is _________

TLS Online TPP Program

#Question id: 14138

#Part-B Specialized Branches in Biotechnology

BLAST uses heuristics to align a query sequence with all sequences in a database.

Reason(R): BLASTX uses protein sequences as queries to search against a protein sequence database.

TLS Online TPP Program

#Question id: 14138

#Part-A Aptitude & General Biotechnology

BLAST uses heuristics to align a query sequence with all sequences in a database.

Reason(R): BLASTX uses protein sequences as queries to search against a protein sequence database.