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MEP M.3/1 DNA Chromosomes and Genes

Total questions: 20

Worksheet time: 22mins

Name
Class
Date
1.

DNA is short for

a)

Ribonucleic acid

b)

Deoxyribonucleic acid

c)

Nucleic acid

2.

How many pairs of chromosomes do human cells contain?

a)

23

b)

46

c)

16

d)

32

3.

Where is DNA found in a human cell?

a)

ribosome

b)

nucleus

c)

cell membrane

d)

cytoplasm

4.

What is a long coiled strand of DNA and proteins?

a)

gene

b)

RNA

c)

chromosome

d)

genome

5.

We inherit our genes from ...

a)

our nucleus.

b)

our parents.

c)

from the food we eat.

6.

DNA is a molecule made up of a combination of how many DNA bases?

a)

1

b)

2

c)

3

d)

4

7.

DNA has a special structure called a

a)

single helix

b)

double helix

c)

triple helix

d)

ladder

8.

Our characteristics are controlled by

a)

DNA

b)

genes

c)

chromosomes

d)

parents

9.
What is the human genome?
a)
a piece of DNA
b)
a chromosome
c)
all of your cells
d)
all of your DNA
10.
Which sentence is FALSE?
a)
All organisms have 23 pairs of DNA.
b)
Chromosomes are made of genes.
c)
DNA is made out of 4 chemicals: adenine, cytosine, thymine, guanine
d)
DNA is the recipe for life.
11.
The twisted ladder shape of DNA is referred to as a ....
a)
Twizzler candy
b)
twisted ladder
c)
double helix
d)
yo mama
12.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
13.

What is a gene

a)

A long length of DNA that codes for a chromosome

b)

A short length of DNA that codes for a chromosome

c)

A short length of DNA that codes for a protein.

14.

The number of human chromosomes is

a)

23

b)

46

c)

92

d)

64

15.
A change in DNA or chromosomes
a)
Mitosis
b)
Meiosis
c)
mutation
d)
Osmosis
16.
Why are your chromosomes arranged in pairs?
a)
Scientists have no idea
b)
Because you get one from your mom and one from your dad
c)
Because pairs can divide easier
d)
Because DNA is awesome
17.

From smallest to largest how would genetic information be organized?

a)

genes, cell, nucleus, chromosome, DNA

b)

chromosome, cell, gene, DNA, nucleus

c)

DNA, gene, chromosome, nucleus, cell

d)

nucleus, cell, gene, DNA, chromosome

18.

What are homologous chromosomes?

a)

Two chromosomes that are the same length

b)

Two chromosomes that have the centromere in the same position

c)

Two chromosomes that have genes for particular characteristics at the same location along their length

d)

All of the above

19.

What are genes?

a)

Pants

b)

Specific traits

c)

Sections of DNA arranged along the chromosomes

d)

Chromosomes

20.

Which of the following base pairings is correct?

a)

T-T, C-A

b)

A-T, C-C

c)

A-T, C-G

d)

C-G, C-C