wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

DNA Structure and Replication

Total questions: 31

Worksheet time: 6mins

Name
Class
Date
1.

What makes up the SIDES (backbone) of a DNA ladder?

a)

nitrogen bases

b)

sugars & phosphates

c)

genes & chromosomes

d)

RNA

2.

What makes up the rungs (steps) of a DNA ladder?

a)

sugars & phosphates

b)

nitrogen bases

c)

sugars

d)

genes & chromosomes

3.

What SHAPE is DNA?

a)

single strand

b)

straight ladder

c)

double helix (twisted ladder)

d)

DNA has no shape

4.

In DNA. what base always pairs with A?

a)

A

b)

T

c)

C

d)

G

5.

If one strand of a DNA molecule has the following order of bases, what will be the correct order of bases on the complementary (matching) strand?

5' -AATTGGCC - 3'

a)

3' - AATTGGCC - 5'

b)

3' - TTAACCGG - 5'

c)

5' - AATTGGCC - 3'

d)

5' - TTAACCGG - 3'

6.

What is DNA made up of?

a)

nucleotides

b)

cytoplasm

c)

RNA

d)

cells

7.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
8.
Why is DNA important?
a)
it is very small and very complicated
b)

it stores energy

c)
it serves as the blueprint for traits of all living things
d)

because it can catalyze reactions

9.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
10.
Cytosine always pairs with
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
11.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
12.
What is the complement to the DNA strand below:
5'-ATGCCAT-3'
a)
5'-TACGGTA-3'
b)
3'-TACGGTA-5'
c)
3'-ATGGCAT-5'
d)
5'-ATGGCAT-3'
13.

The picture below shows the steps of DNA replication beginning with step one and ending with step three.


​Because you are reusing the old, or parent, DNA strand DNA replication is said to be

a)

Semi- Conservative

b)

Semi-discontinuous

c)

Continuous

d)

Fully-Conserveative

14.

The picture below shows an enzyme unwinding and unzipping DNA.

​

​What is the name of this enzyme?

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polyermase

d)

RNA Polymerase

15.

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

a)

DNA Helicase

b)

DNA Ligase

c)

DNA polymerase

d)

RNA Polymerase

16.

The directionality of DNA is said to be ___________, because it is side by side by goes in opposite directions.

a)

Anti-directional

b)

Parallel

c)

Anti-parallel

d)

Anti-uniform

17.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
18.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
19.
If a DNA molecule is 18% Guanine which of the following is correct
a)
18% cytosine, 32% adenine, 32% thymine
b)
32% cytosine, 18% adenine, 32% thymine
c)
18% cytosine, 64% adenine, 64% thymine
d)
32% cytosine, 32% adenine, 18% thymine
20.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
21.
Adenine, Cytosine, Guanine and Thymine are examples of
a)
DNA structure
b)
DNA bases
c)
DNA double helix
d)
Paired bases
22.
A nucleotide is made up of three parts:  which of these is not one of those parts?
a)
sugar
b)
phosphate
c)
amino acids
d)
base
23.

Choose the correct complementary nucleotide sequence for the following:

GGG - ACT - TTT

a)

CCC - TGA - AAA

b)

AAA - CAG - GGG

c)

TTT - CAT - GGG

d)

GGG - TGA - CCC

24.

Choose the correct complementary nucleotide sequence for the following:

TTT - GTC - CCC

a)

CCC - TGA - AAA

b)

AAA - CAG - GGG

c)

TTT - CAT - GGG

d)

GGG - TGA - CCC

25.

Choose the correct complementary nucleotide sequence for the following:

AAA - GTA - CCC

a)

CCC - TGA - AAA

b)

AAA - CAG - GGG

c)

TTT - CAT - GGG

d)

GGG - TGA - CCC

26.

According to the Base pair rule, if a DNA molecule contains 1500 adenines how many thymine's will it contain?

a)

1500

b)

500

c)

0

d)

1000

27.

Choose the correct complementary nucleotide sequence for the following:

CCC - ACT - GGG

a)

CCC - TGA - AAA

b)

AAA - CAG - GGG

c)

TTT - CAT - GGG

d)

GGG - TGA - CCC

28.

According to the Base pair rule, if a DNA molecule contains 2 cytosine's how many guanines will it contain?

a)

1500

b)

2

c)

0

d)

1000

29.

How many hydrogen bonds are between Adenine and Thymine?

a)

1

b)

2

c)

3

d)

4

30.

How many hydrogen bonds are between Guanine and Cytosine?

a)

1

b)

2

c)

3

d)

4

31.

The sugar-phosphate backbone is held together by _____ bonds. These are _____ bonds.

a)

covalent, strong

b)

hydrogen, strong

c)

covalent, weak

d)

hydrogen, weak

Similar Resources on Wayground

Midterm Review

32 questions

Midterm Review

quiz

Worksheet

•

9th - 10th Grade

Nervous System/Vitamins

27 questions

Nervous System/Vitamins

quiz

Worksheet

•

10th - 12th Grade

CP UNIT 7 REVIEW

27 questions

CP UNIT 7 REVIEW

quiz

Worksheet

•

9th Grade

Biology test

26 questions

Biology test

quiz

Worksheet

•

9th Grade

Cell Divison/Cycle Study Quiz

26 questions

Cell Divison/Cycle Study Quiz

quiz

Worksheet

•

9th - 10th Grade

Quiz preperation

26 questions

Quiz preperation

quiz

Worksheet

•

9th Grade

Parts of the Cell Membrane

26 questions

Parts of the Cell Membrane

quiz

Worksheet

•

9th - 12th Grade