wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

DNA Structure Replication Review

Total questions: 23

Worksheet time: 15mins

Name
Class
Date
1.

Like RNA, DNA is a type of:

a)

Carbohydrate

b)

Lipid

c)

Protein

d)

Nucleic Acid

2.

The subunit of nucleic acids like DNA and RNA are called:

a)

Monosaccharides

b)

Sugars

c)

Amino acids

d)

Nucleotides

3.

The subunits of nucleic acids, such as DNA, are nucleotides. What are the 3 parts of a nucleotide?

a)

Phosphate group

b)

Sugar group

c)

Hydrogen group

d)

Nitrogenous Base

4.

What does DNA stand for?

a)

Double-helix Nucleic Acid

b)

Deoxyribonucleic Acid

c)

Dehydrogenic Acid

d)

Denitrogenous Acid

5.

What type of sugar group does DNA have?

a)

Ribose

b)

Glucose

c)

Deoxyribose

d)

Lactose

6.

DNA has nitrogenous bases that come in pairs. What is this called?

a)

Complementary Base Pairing

b)

Convergent Pairing

c)

Nondisjunction

d)

DNA Replication

7.

How many possible bases are found in DNA?

a)

1

b)

2

c)

3

d)

4

8.

Select the 2 correct DNA base pairs.

a)

Adenine and Thymine

b)

Adenine and Cytosine

c)

Cytosine and Guanine

d)

Cytosine and Thymine

9.

DNA is said to be in the shape of a:

a)

Single helix

b)

Double helix

c)

Plasmid

d)

Complementary base pairs

10.

Which 2 parts of a nucleotide form the sides or "backbone" of the DNA ladder?

a)

Nitrogenous Base

b)

Phosphate group

c)

Deoxyribose sugar

d)

Ribose sugar

11.

The nitrogenous bases of DNA nucleotides form the middle "rungs" of the DNA ladder. What type of bond holds these bases together?

a)

Strong covalent bonds

b)

Peptide bonds

c)

Weak hydrogen bonds

d)

Strong phosphorous bonds

12.

Every set of 3 bases or letters in DNA and RNA are called a:

a)

Codon

b)

Triplet

c)

Chart

d)

Amino acid

13.

Select the correct complementary DNA strand for the following sequence: TAC-GCT

a)

ATG-CGA

b)

AUG-CGA

c)

TAC-GCT

d)

GTC-ATC

14.

A segment of DNA is called a:

a)

Allele

b)

Gene

c)

Codon

d)

Trait

15.

What aspect of DNA determines the proteins that are produced?

a)

The arrangement of nitrogenous bases

b)

The double helix shape

c)

The alternating sugar-phosphate backbone

d)

The complementary nature

16.

What process is shown in this image?

a)

Transcription

b)

Translation

c)

DNA Replication

d)

Independent Assortment

17.

Where in the cell does DNA replication occur?

a)

RIbosomes

b)

Cell membrane

c)

Nucleus

d)

Nucleolus

18.

Why do cells replicate their DNA?

a)

To express genes

b)

To code for proteins

c)

To make more DNA for new cells

d)

To repair damaged DNA

19.

When do cells replicate their DNA?

a)

During the S phase of Interphase before cell division

b)

During cytokinesis following cell division

c)

During cell division or mitosis

d)

During the G1 phase of Interphase before cell division

20.

During DNA replication, the DNA is first unzipped by an enzyme called:

a)

Lactose

b)

Helicase

c)

DNA Polymerase

d)

Catalase

21.

During DNA replication, an enzyme called ________ is responsible for attaching new nitrogenous bases to each unzipped strand of the DNA.

a)

Helicase

b)

Lactose

c)

Catalase

d)

DNA Polymerase

22.

In DNA replication, the DNA is first unzipped and then new nitrogenous bases are added to each of the original strands. This is called a _______ because half of the original DNA is preserved in each new strand.

a)

Semi-conservative process

b)

Dispersive process

c)

Conservative process

23.

DNA is found in what cell structure?

a)

Rough Endoplasmic Reticulum

b)

Ribosomes

c)

Nucleus

d)

Nucleolus