Free Printable DNA Replication

Worksheets

DNA Replication

Total questions: 20

Worksheet time: 13mins

Name

Class

Date

Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG

ATG TGA CAG

TAC ACT GTC

GTA AGT GAC

CAT TCA CTG

The enzyme that unwinds the DNA to prepare for replication

helicase

replicase

polymerase

synthase

order of replication

3, 4, 2, 1

3, 1, 4, 2

2, 1, 4, 3

3, 4, 1, 2

A process in which DNA has the unique ability to make an exact copy of itself.

Replication

Translation

Transcription

Place the following in sequential order
1. Recoil
2. Straightens the double helix
3. Breaks Hydrogen bonds
4. Adds Free nucleotides

1, 2, 3, 4

3, 4, 2, 1

3, 2, 4, 1

2, 3, 4, 1

What will the first four bases of the new DNA strand look like if copying the template strand?

TGGT

ACCA

GTTG

CAAC

Why does DNA replicate?

To create another copy for the new cell

To create a duplicate copy in case the original gets damaged

To create a new copy to replace the damaged original

DNA replication results in

2 completely new DNA molecules

2 DNA molecules that each contain a strand of the original

1 new DNA molecule and 1 old

1 new molecule of DNA

Enzyme that connects the DNA to the backbone (glues)

Ligase

Polymerase

Helicase

Primase

10.

Enzyme that breaks hydrogen bonds (unzips)

Ligase

Polymerase

Primase

Helicase

11.

Site where replication begins

Polymerase action site

Replication fork

Replication Origin

In the front

12.

The new DNA strand formed after DNA replication is an exact copy of its parent strand

True

False

13.

#1 in the picture above (builder)

Helicase

Primase

Polymerase

Ligase

14.

#4 in the picture

Polymerase

Primase

Helicase

Ligase

15.

Number 1 in the picture above

Replication

DNA Polymerase

Primase

Ligase

16.

#3 setting Primers

Ligase

Helicase

Polymerase

Primase

17.

What are the gaps between the newly synthesized DNA on the lagging strand called?

Okazaki fragments

Polymer gaps

Helicase fragments

Acidic gaps

18.

A DNA nucleotide contains all of the following, except...

Deoxyribose

Phosphate group

Nitrogenous base

Cholesterol

19.

What is the shape of DNA?

Double helix

Triple helix

Flat, bilayer

Three-pronged rigid ladder

20.

Match he nucleotide with its complementary nucleotide. (DNA to DNA).

Adenine -

Thymine

Guanine

Cytosine

100 %

DNA Replication

Total questions: 20

Worksheet time: 13mins

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