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DNA and Genes Review

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.
A strand of DNA that looks like a twisted ladder is called a _____________________
a)
triple twist
b)
corkscrew
c)
double helix
d)
chain reaction
2.

What are the parts of a nucleotide?

a)

phosphate, sugar, base

b)

A, T, G, C

c)

Nucleic Acids

d)

two base pairs connected

3.

What do genes do?

a)

make proteins

b)

store energy

c)

create covalent bonds

d)

create hydrogen bonds

4.

The 'backbone' or 'ribbon' of the DNA strand is made of:

a)

phosphate and sugar

b)

phosphate only

c)

phosphate and base

d)

sugar and base

5.

What is this a picture of?

a)

nucleotide

b)

DNA strand

c)

chromosome

d)

gene

6.

DNA is shaped in a:

a)

double helix

b)

tightly packed swirl

c)

twisted ladder

d)

nucleotide

7.
In DNA, Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
8.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
9.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
10.
Which of the following is a base that is NOT contained in DNA?
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
11.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
12.
Who were the first guys to build a model of a DNA molecule?
a)
Larry, Moe, and Curley Joe
b)
Watson and Crick
c)
Watson and Holmes
d)
Superman and Batman
13.

What are the four nitrogen bases present in DNA?

a)

adenine, lysine, guanine, cytosine

b)

adenine, uracil, guanine, cytosine

c)

cytosine, thymine, lysine, adenine

d)

cytosine, guanine, thymine, adenine

14.

What are the building blocks of DNA?

a)

proteins

b)

starches

c)

nucleotides

d)

RNA

15.

What are the 3 parts of a nucleotide?

a)

phosphate, starch, hydrogen bases

b)

sugar, phosphate, nitrogen base

c)

nitrogen bases, DNA, sugar

d)

none of the above