DNA STRUCTURE AND REPLICATION QUIZ

Reverse transcriptase produces

DNA from RNA

RNA from RNA

DNA from peptides

RNA from DNA

TRUE ANSWER : ?
YOUR ANSWER : ?

In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

mutational

semiconservative

discontinuous

antiparallel

TRUE ANSWER : ?
YOUR ANSWER : ?

The nicks or gaps between Okazaki fragments are eventually sealed by

RNA ligase

polymerase

gyrase

DNA ligase

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following enzyme adds complementary bases during replication?

Synthesase

Polymerase

Replicase

Helicase

TRUE ANSWER : ?
YOUR ANSWER : ?

DNA can be sequenced by the

chemical method

both (a) and (b)

physical method

chain termination procedure

TRUE ANSWER : ?
YOUR ANSWER : ?

Proteins involved in opening a replication bubble are

ligase

single stranded binding proteins

DNA helicases

DNA topoisomerase

TRUE ANSWER : ?
YOUR ANSWER : ?

An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

helicase

restriction endonuclease

transposase

reverse transcriptase

TRUE ANSWER : ?
YOUR ANSWER : ?

Nucleosome is

an hexamer of three histones with H1 protein

an octamer of four histones with H1 protein

an hexamer of three histones without H1 protein

an octamer of four histones without H1 protein

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

Lagging strand

Okazaki fragments

Primers

Leading strands

TRUE ANSWER : ?
YOUR ANSWER : ?

DNAs when charged, migrate in a gel towards the

positive pole

negative pole

will not migrate

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

↑