SL DNA QUIZ

1.

1 point

Which enzyme helps add new RNA nucleotides to the growing strand of mRNA molecule during transcription.
I. DNA Polymerase
II. Helicase
III. RNA polymerase
IV. ligase

I and III only

I and II only

II only

II and IV only

I only

III only

2.

1 point

What is produced during transcription?

Proteins

DNA molecules

RNA Polymerase

RNA molecules

3.

1 point

Which structure contains genes?
A the cell membrane of an animal cell
B the cytoplasm of an animal cell
C the nucleus of a plant cell
D the vacuole of a plant cell

A

C

D

B

4.

1 point

During Translation, the type of amino acid that is added to the growing polypeptide depends on the

codon on the tRNA molecule only

codon on the mRNA and the anticodon on the tRNA to which the amino acid is attached

anticodon on the tRNA to which the amino acid is attached only

anticodon on the mRNA and the codon on the tRNA to which the amino acid is attached

anticodon on the mRNA molecule only

5.

1 point

The percentage of thymine in the DNA of an organism is approximately 30%. What is the percentage of guanine?
A. 70%
B. 30%
C. 40%
D. 20%

A

B

C

D

6.

3 points

A certain gene has the following DNA sequence:
AGG GAC AAG TCC ACA ATC

i. From left to right, write the mRNA sequence that would be made
ii. Look at RNA/ amino acid chart; write the amino acid sequence of the protein that would be made from the problem above

7.

1 point

DNA is copied during the process called

Transformation

Translation

Replication

Transcription

8.

1 point

Which of the following are found in both DNA and RNA?
I.Ribose
II. Phosphate groups
III. Deoxyribose
IV.Guanine
V. Cytosine
VI. Uracil
VII. Thymine
VIII. Adenine

I, III,V,VII,VIII

II, IV,V,VIII

II, IV,V, VI, VII,VIII

All are found in both DNA & RNA

II, III, IV,V,VIII

9.

1 point

Which enzyme are involved in replication
I. DNA Polymerase
II. Helicase
III. RNA polymerase
IV. ligase

I only

I, II, and IV

All of the listed enzymes are involved

I and II only

10.

1 point

DNA Replication results in two DNA molecules

Each with two new DNA strands

One with two new strands and the other with two original/old strands

Each with one new strand and one original/ old strand

Each with two original/ old strands

11.

1 point

The order of nitrogenous bases in DNA determines the order of in proteins.

12.

1 point

How many codons are needed to specify three amino acids?

3

6

9

12

13.

1 point

What enzyme is used in transcription but not in translation?
A. DNA polymerase
B. Helicase
C. Protease
D. RNA polymerase

A

D

B

C

14.

1 point

The triplet of bases on the end of tRNA molecule is called a(an)

15.

1 point

What is a codon?
A. A sequence of nucleotides on rRNA that corresponds to an amino acid
B. A sequence of nucleotides on mRNA that corresponds to an amino acid
C. A sequence of nucleotides on tRNA that corresponds to an amino acid
D. A sequence of nucleotides on DNA that corresponds to an amino acid

D

A

B

C

16.

1 point

RNA contains the sugar

Lactose

glucose

Ribose

Deoxyribose

17.

1 point

What is replicated by a semi-conservative process?
A. Messenger RNA (mRNA) only
B. Messenger RNA (mRNA) and transfer RNA (tRNA) only
C. Messenger RNA (mRNA), transfer RNA (tRNA) and DNA only
D. DNA only

A

B

C

D

18.

1 point

Unlike DNA, RNA contains

cytosine

phosphate groups

thymine

Uracil

Adenine

19.

1 point

Which enzyme initiates the the separating of two strands of DNA during DNA replication:
I. DNA Polymerase
II. Helicase
III. RNA polymerase
IV. ligase

all listed enzymes are involved

I only

I, II, and IV only

II only

III only

I and II only

20.

1 point

Why is it possible for an amino acid to be specified by more than one kind of codon?

The codon AUG codes for the animo acid methionine and serves as the "start" codon for protein synthesis.

There are 64 different kinds of codons but only 20 amino acids.

Some codons have the same sequence of nucleotides.

some codons do not specify an amino acid

21.

1 point

Gene contain instructions for assembling

proteins

purines

pyrimidines

nucleosomes

22.

1 point

If the DNA sequence that is two be transcribed is GAT. What will be the complimentary anticodon for this section of DNA be during translation?

GAU

CUA

GAT

CTA

23.

1 point

Which enzyme adds more nucleotides to the growing strands of DNA during DNA replication:
I. DNA Polymerase
II. Helicase
III. RNA polymerase
IV. ligase

I only

II only

III only

I and IV only

II,III, and IV only

All of the listed enzymes are involved

24.

1 point

How would the following DNA sequence, ACGTTGCATGGCA, be transcribed?
A. ACGTTGCATGGCA
B. ACGUUGCAUGGCA
C. UGCAACGUACCGU
D. TGCAACGTACCGT

A

B

C

D

25.

1 point

Which of the following are connected by hydrogen bonds?
A. Hydrogen to oxygen within a molecule of water
B. Phosphate to sugar in a DNA molecule
C. Base to sugar in a DNA molecule
D. Hydrogen to oxygen between two different molecules of water

A

B

C

D

26.

1 point

A certain gene in a bacterium codes for a polypeptide that is 120 amino acids long. How many nucleotides are needed in the mRNA to code for this polypeptide?
A. 30
B. 40
C. 360
D. 480

A

B

C

D

27.

1 point

DNA is copied during the process called

Transformation

Replication

Transcription

Translation

28.

1 point

DNA is copied during the process called

Translation

Replication

Transcription

Transformation

29.

1 point

What happens during the process of translation?

Messenger RNA is made from DNA.

Transfer RNA is made from messenger RNA

The cell uses information from messenger RNA to produce proteins.

Copies of DNA molecules are made

30.

1 point

In some people, hemoglobin always contains the amino acid valine in place of a glutamic acid at one position in the protein. What is the cause of this?
A. An error in transcription of the hemoglobin gene
B. An error in translation of the mRNA
C. Lack of glutamic acid in the diet
D. A base substitution in the hemoglobin gene

A

B

C

D