Free Printable DNA Replication

Worksheets

DNA Replication

Total questions: 11

Worksheet time: 9mins

Name

Class

Date

The enzyme that unwinds the DNA to prepare for replication

helicase

primase

polymerase

ligase

DNA replication results in two DNA molecules,

each one with two original strands

each one with two new strands

each one with one new strand and one original strand

one with two new strands and the other with two original strands

Which enzyme is responsible for adding nucleotides?

Topoisomerase

DNA Polymerase

Ligase

Helicase

The process of DNA replication is called semi conservative because it results in

none of these

Two DNA molecules. One original molecule and one with two new strands

two exact copies with new strands

two identical molecules, each with 1 original strand and one new.

Which enzyme fixes the Okazaki fragments in the lagging strand?

Helicase

Polymerase

Ligase

Primase

If a strand reads:
3' A A A T T T C 5'
The matching strand would read...

5' T T T A A A G 3'

3' T T T A A A G 5'

5' A A A T T T C 3'

3' U U U A A A G 5'

What are the sections of newly synthesized DNA on the lagging strand called?

Okazaki fragments

Polymer gaps

Helicase fragments

Acidic gaps

This picture is illustrating the ____ nature of DNA.

anti-parallel

parallel

helical

radioactive

Polymerase is able to replicate the new DNA ______ along the leading strand.

continuously

only in short fragments

very slowly

prokaryotically

10.

Which enzyme lays down short segments of RNA as a starting place for DNA Polymerase

polymerase

ligase

primase

helicase

11.

New strands of DNA are always built in the ___________ to ________ direction.

5' to 3'

3' to 5'

5' to 5'

3' to 3'

Reset

DNA Replication

Total questions: 11

Worksheet time: 9mins

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