Quiz on molecular biology

The function of β subunit of polymerase is

Template binding Catalytic binding Promoter binding Cation binding

• Template binding

• Catalytic binding

• Promoter binding

• Cation binding

True replication of DNA is due to

• Phosphate backbone

• Hydrogen bonding

• Complementary base pairing rule

• None

Mode of DNA replication is

• Conservative and bidirectional

• Semiconservative and unidirectional

• Semiconservative and bidirectional

• Conservative and unidirectional

Which enzyme is used to join nicks in the DNA strand?

• Primase

• DNA polymerase

• DNA ligase

• Endonuclease

Which of the following processes does not occur in prokaryotes?

• Transcription

• Splicing

• Translation

• Replication

cDNA is synthesised from RNA by the enzyme

• DNA polymerase

• DNA synthetase

• DNA convertase

• Reverse transcriptase

Short strands of ——- primer are used in DNA replication.

• DNA

• RNA

• Histone

• Protein

Klenow fragment is derived from

• DNA polymerase I

• RNA polymerase II

• Reverse transcriptase

• DNA ligase

Bacteria protect themselves from viruses by fragmenting viral DNA with

• Ligase

• Endonuclease

• Exonuclease

• Gyrase

Plasmids are used as cloning vectors for which of the following reasons?

• Can be multiplied in culture

• Self-replication in bacterial cells

• Can be multiplied in laboratories with the help of enzymes

• Replicate freely outside bacterial cells