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DNA Test Review Bio

Total questions: 39

Worksheet time: 21mins

Name
Class
Date
1.

What is the shape of DNA?

a)

Double helix

b)

single stranded

c)

heart shaped

d)

lopsided

2.

A nucleotide consists of a

a)

Nitrogen Base

b)

5 Carbon Sugar

c)

Phosphate group

d)

All of these are correct

3.

The two strands of a DNA double helix are

a)

Purines

b)

Pyrimidines

c)

Complementary

d)

Identical

4.

DNA replication begins when the two strands of the original DNA

a)

are separated by the breaking of hydrogen bonds between nitrogen bases

b)

acts as a template

c)

attracts a nitrogen base

d)

destroys the entire genetic code

5.

After DNA replication, the two DNA molecules that are made

a)

are opposites

b)

are identical

c)

leave the nucleus

d)

can never replicate again

6.

Each combination of three nitrogen bases on messenger RNA is called a(an)

a)

Anticodon

b)

Codon

c)

Enzyme

d)

Nucleic Acid

7.

Cytosine and Thymine are

a)

Purines

b)

Pyrimidines

8.

During protein synthesis, the mRNA strand is made through the process of:

a)

Duplication

b)

Transcription

c)

Translation

d)

Binge-watching Netflix

9.

In messenger RNA, each codon specifies a particular

a)

nucleotide

b)

purine

c)

amino acid

d)

pyrimidine

10.

What type of bond holds the nitrogen bases together in a DNA strand?

a)

Covalent

b)

Gold

c)

Ionic

d)

Hydrogen

11.

What is the name of the sugar found in DNA?

a)

deoxyribose

b)

nucleotide

c)

ribose

d)

glucose

12.

What is the name of the sugar found in RNA?

a)

deoxyribose

b)

nucleotide

c)

ribose

d)

glucose

13.

The genetic code of an organism is determined by

a)

The number of amino acids in its cell

b)

The speed at which polypeptides are produced

c)

The sequence of nitrogen bases in its DNA

d)

The shape of ribosomes in its cell

14.

RNA does not contain the nitrogen base ___; instead RNA contains ______.

a)

Adenine; Thymine

b)

Thymine; Uracil

c)

Uracil; Thymine

d)

Thymine; Adenine

15.

Which of the following is NOT a nitrogen base found in DNA?

a)

Uracil

b)

Thymine

c)

Guanine

d)

Adenine

16.

Chargaff’s Rule states that DNA from any cell should have a ______ ratio of purine and pyrimidine bases.

a)

2:1

b)

4:1

c)

3:1

d)

1:1

17.

DNA Replication is

a)

Semi-conservative

b)

Transcripted

c)

Parallel

18.

What enzyme is responsible for unwinding (unzipping) the DNA to prepare for DNA Replication?

a)

DNA Polymerase

b)

RNA Polymerase

c)

Helicase

19.

What enzyme is responsible for adding new nucleotides during DNA replication?

a)

DNA Polymerase

b)

DNA Synthase

c)

DNA Helicase

d)

Ligase

20.

Protein synthesis is a process that begins with ______ and ends with ______.

a)

Translation; Transcription

b)

proteins; amino acids

c)

Transcription; Translation

d)

Transfusion; Transportation

21.

Where does transcription occur in the cell?

a)

Nucleus

b)

Ribosome

c)

Cytoplasm

d)

Mitochondria

22.

Where does translation occur in the cell?

a)

Nucleus

b)

Ribosome

c)

Chloroplast

d)

Mitochondria

23.

Which scientists helped to discover the double helix?

a)

Watson

b)

Crick

c)

Franklin

d)

All of the above

24.

How many Hydrogen bonds hold Adenine and Thymine together?

(a)  

25.

A Nucleotide is shown above. What part of the Nucleotide is labelled "3"?

a)

5 Carbon Sugar

b)

Phosphate

c)

Nitrogenous Base

26.

DNA contains the genetic code that makes _______.

a)

Nucleic Acids

b)

Proteins

c)

Lipids

d)

Carbohydrates

27.

A Nucleotide is shown above. What part of the Nucleotide is labelled "2"?

a)

5 Carbon Sugar

b)

Phosphate

c)

Nitrogenous Base

28.

Every 3 base sequence of tRNA is called a(n):

a)

nucleotide

b)

base pair

c)

codon

d)

anticodon

29.

When looking up an amino acid, you should always use the:

a)

mRNA anticodon

b)

mRNA codon

c)

tRNA codon

d)

tRNA anticodon

30.

DNA is (a)   stranded.

31.

If the DNA sequence is TGA, what is the mRNA sequence?

(a)  

32.

If the mRNA sequence is ACU, what is the tRNA sequence?

(a)  

33.

You will need to be able to label a DNA Replication figure using the following word bank: Replication fork, Leading strand, Lagging strand, and Okazaki fragment

a)

True

b)

False

34.

What is the amino acid for the following mRNA codon:

CCA

(a)  

35.

Any change in DNA will always change the amino acid(s), changing the protein.

a)

True

b)

False

36.

The original DNA sequence is ACGACGT. A mutation occurs and now the DNA sequence is ATGACGT. This is an example of a ______ mutation.

a)

substitution

b)

deletion

c)

frameshift

d)

chromosomal

37.

Which type of mutation below would cause the most problems?

a)

Gene

b)

Point

c)

Frameshift

d)

Substitution

38.

Which type of mutation does not change the amino acid?

a)

point mutation

b)

frameshift mutation

c)

silent mutation

d)

chromosomal mutation

39.

One nucleotide is missing from a DNA gene sequence. Which type of mutation would this be?

a)

deletion

b)

insertion

c)

point

d)

substitution

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