S2/CFU 4.11 - -DNA Enzymes

Front

What is the process by which a DNA molecule makes an identical copy of itself?

Back

DNA replication

Front

Which enzyme is responsible for adding new nucleotides to the growing DNA strand during replication?

Back

DNA polymerase

Front

What is the function of DNA ligase in DNA replication?

Back

Joins Okazaki fragments on the lagging strand

Front

Which enzyme is responsible for unwinding the double-stranded DNA during replication?

Back

helicase

Front

What is the role of primase in DNA replication?

Back

Synthesizing RNA primers on the DNA template

Front

What is the function of DNA polymerase III in DNA replication?

Back

Adds nucleotides to the growing DNA strand

Front

What is the difference between DNA polymerase I and DNA polymerase III?

Back

DNA polymerase I is involved in DNA repair and has 5' to 3' exonuclease activity, while DNA polymerase III is the main enzyme involved in DNA replication and has 3' to 5' exonuclease activity.

Front

What happens if there is a mistake in the DNA sequence during replication?

Back

Mutations or genetic disorders

Front

How does DNA ligase repair the gaps in the newly synthesized DNA strand?

Back

It catalyzes the formation of phosphodiester bonds between adjacent nucleotides.

Front

What are the key differences between DNA helicase and DNA polymerase in terms of their functions during DNA replication?

Back

DNA helicase unwinds the double-stranded DNA, while DNA polymerase synthesizes new DNA strands.