Prepare for NEET Biology Molecular Basis of Inheritance with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert explanations of DNA replication and genetics.
During DNA replication, the enzyme responsible for unwinding the double helix is:
DNA polymerase
Ligase
Primase
Helicase
Which of the following is NOT a characteristic of the lagging strand during DNA replication?
Synthesized discontinuously
Forms Okazaki fragments
Requires multiple RNA primers
Synthesized continuously
The role of DNA ligase in DNA replication is to:
Unwind the DNA helix
Synthesize RNA primers
Join Okazaki fragments
Proofread the newly synthesized DNA
What is the function of single-strand binding proteins (SSBPs) in DNA replication?
Initiate DNA synthesis
Unwind the DNA double helix
Prevent reannealing of separated DNA strands
Join Okazaki fragments
Which enzyme is responsible for removing RNA primers during DNA replication?
DNA polymerase III
DNA ligase
Primase
DNA polymerase I
Which of the following DNA repair mechanisms is MOST likely to be involved in correcting a thymine dimer caused by UV radiation?
Base Excision Repair
Mismatch Repair
Nucleotide Excision Repair
Homologous Recombination
Which enzyme is responsible for the process of transcription?
DNA polymerase
Helicase
Ligase
RNA polymerase
Which of these is NOT a supporting argument for the RNA world hypothesis?
RNA's ability to self-replicate
RNA's catalytic properties
The existence of ribozymes
DNA's higher stability
Why is RNA considered a less stable molecule than DNA?
The presence of uracil instead of thymine.
The single-stranded nature of RNA.
The presence of the 2'-OH group in ribose.
The shorter length of RNA molecules.
During transcription, the DNA strand that is used as a template for RNA synthesis is called the:
Coding strand
Sense strand
Template strand
Anti-sense strand
