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DNA

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.

What does DNA stand for?

a)

Dinosaur Running Acid

b)

Deoxyribonucleic Acid

c)

Ribonucleic Acid

d)

Deliver Random Number

2.

How many pairs of chromosomes do humans have?

a)

46

b)

23

c)

24

d)

48

3.

What is the organelle responsible for making proteins?

a)

Mitochondria

b)

Endoplasmic reticulum

c)

Ribosomes

d)

Chloroplast

4.

In Eukaryotic cells, where is DNA mainly located?

a)

Nucleus

b)

Mitochondria

c)

Chloroplasts

d)

Cytoplasm

5.

What part of the DNA are the sugar phosphate backbones?

a)

The rungs of the ladder

b)

The two, long spiralling strands

c)

Nitrogenous bases

d)

Twisted rope ladder

6.

What part of the nucleotide is labled "B"

a)

Phosphate

b)

Nitrogenous Base

c)

Protein

d)

Sugar (Deoxyribose or Ribose)

7.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
8.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
9.

Which of these base pairs go together?

a)

Adenine and Guanine

b)

Cytosine and Thymine

c)

Adenine and Thymine

d)

Guanine and Cytosine

10.

What is the rule for the nitrogenous bases to bond together?

a)

Complementary base pairing

b)

Opposite base pairing

c)

Hydrogen base pairing

d)

Sugar phosphate base pairing

11.
The two strands of nitrogenous bases in DNA are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
12.

What is the function of DNA?

a)

Store genetic information

b)

Store energy

c)

Form enzymes

d)

Form the cell membrane

13.

How many types of nitrogenous bases are there?

a)

2

b)

3

c)

5

d)

4

14.

Which of these is not a genetic disorder?

a)

Down Syndrome

b)

Turner Syndrome

c)

Anemia

d)

Sickle Cell Anemia

15.

What are the three molecules that make up a nucleotide

a)

1 Sugar, 1 Phosphate and 1 Nitrogenous base

b)

2 Sugars and 1 Phosphate

c)

1 Nitrogenous base and 2 Phosphate

d)

1 Sugar and 1 Phosphate