List of top Bioinformatics Questions on Molecular Biology asked in CUET (PG)

A bacterial cell exposed to UV radiation shows an increased rate of C-T transitions at specific sites. Later analysis reveals that the same replication fork also accumulated short DNA stretches synthesized by DNA Pol-I. Which DNA repair pathway was most likely activated?

Sequence of action of a type II topoisomerase: A. Dissociation of gyrase, B. Translation of unbroken DNA strand, C. Gyrase-DNA complex, D. Ligation, E. Cleavage of DS-DNA.

Match List-I with List-II. List-I: A. Ala amino acid, B. Arg amino acid, C. Asn amino acid, D. Trp amino acid. List-II: I. 6 codons, II. 2 codons, III. 4 codons, IV. 1 codon.

Find the correct sequence of reaction catalyzed by DNA ligase: A. DNA ligase ligates Okazaki fragment to rest of lagging strand. B. Polymerase I eliminates downstream RNA primer by nick translation. C. Unwinding of parental duplex by helicase and elongation of leading strand by polymerase III exposes single-stranded region in front of lagging strand. D. Polymerase III extends DNA Okazaki fragments from primer. E. Primase synthesizes RNA primer.

Which of the following statements are true for DNA: A. DNA specimens isolated from different tissues of the same species have same base composition. B. DNA extracted from similar species have same base composition. C. Adenine residue can be different from thymine residues. D. Guanine residues are always equal to cytosine residues. E. Base composition cannot be used to classify organism.

Given below are two statements: Assertion (A): The completion of polypeptide synthesis is signaled by the translocation of one of the stop codons into the A site. Reason (R): There are no t-RNA that recognize these codons under normal circumstances, termination of the chain does not involve the binding of a t-RNA.

Sequence of Southern Blotting is: A. Gel Electrophoresis, B. Hybridization with radioactivity labelled probe, C. Fragmentation with Restriction enzyme, D. Transfer to nitrocellulose filter, E. Autoradiophagy.

Which of the following genetic recombination process is not useful for mapping bacterial and viral chromosomes?

Which of the pair is common among both DNA and RNA?

Which residue is removed from DNA by base excision repair process?

DNA Polymerase I molecule contains how many active sites?

In Transcription, which among these Transcription factors have Helicase activity

A group of transposable elements described as retroelements encompass

Which of the following in vitro technique is used to find Protein-Protein Interaction

The presence and distribution of specific mRNAs within a cell can be detected by

Cosmids contain
(A). Replication origin
(B). Unique restriction sites
(C). A selectable marker from a plasmid
(D). Cos site from phage \(\lambda\) genome
Choose the correct answer from the options given below:

RNA polymerase responsible for the synthesis of tRNA

Arrange the following bacteriophages in the increasing order of size in terms of nucleotide base pairs
(A). T4 phage
(B). \(\lambda\) phage
(C). T7 phage
(D). \(\phi\)X174 phage
Choose the correct answer from the options given below:

Which one of the following regions of the target gene is NOT used for making an RNAi construct to knock down its expression