Explore topic-wise MCQs in Biochemistry.

This section includes 107 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.

101.

Deoxyribonucleoside triphosphates, being need in the chain termination methods are
A. dATP
B. dGTP and dCTP
C. dTTP
D. all of these
Answer» E.
Discussion
102.

Number of times the two DNA strands are interwined in circular DNA and is known as
A. helix frequency
B. linking number
C. twisting number
D. none of these
Answer» C. twisting number
Discussion
103.

In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as
A. mutational
B. semiconservative
C. discontinuous
D. antiparallel
Answer» C. discontinuous
Discussion
104.

The size of a linear DNA fragment in a gel can be estimated by
A. fluorescence in UV light
B. the sedimentation coefficient
C. the time it takes the gel to run
D. comparison with a molecular weight standard such as Hind III digested phage lambda
Answer» E.
Discussion
105.

Proteins which help to open the double helix for DNA synthesis are
A. DNA helicases
B. single stranded binding proteins
C. ligase
D. DNA topoisomerase
Answer» B. single stranded binding proteins
Discussion
106.

The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is
A. DNA polymerase
B. strandase
C. helicase
D. none of these
Answer» D. none of these
Discussion
107.

An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called
A. transposase
B. helicase
C. reverse transcriptase
D. restriction endonuclease
Answer» E.
Discussion