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AP Biology Unit 6

Total questions: 24

Worksheet time: 20mins

Name
Class
Date
1.

How does the DNA in a prokaryote differ from a eukaryote?

a)

Prokaryote has circular DNA, Eukaryotes has linear DNA

b)

Prokaryote has single stranded DNA, Eukaryotes has double stranded DNA

c)

Prokaryote has linear DNA, Eukaryotes has prokaryote DNA

d)

Prokaryote has double stranded DNA, Eukaryotes has single stranded DNA

2.

Identify which of the following best describes purines and pyrimidines.

a)

Purines (C, T, & U) have single ring, Pyrimidines (A & G) have double ring

b)

Purines (C, T, & U) have double ring, Pyrimidines (A & G) have single ring

c)

Purines (A & G) have single ring, Pyrimidines (C, T, & U) have double ring

d)

Purines (A & G) have double ring, Pyrimidines (C, T, & U) have single ring

3.

Which of the following demonstrates base pairing rules to 5' - CAGGT - 3'

a)

3' - TGGAC - 5'

b)

3' - GTCCA - 5'

c)

5' - GTCCA - 3'

d)

5' - CAGGT - 3'

4.

Which enzyme is responsible for relaxing supercoiling in front of the replication fork?

a)

helicase

b)

DNA polymerase

c)

topoisomerase

d)

ligase

5.

Which enzyme is responsible for unzipping the DNA strands?

a)

helicase

b)

DNA polymerase

c)

topoisomerase

d)

ligase

6.

Which enzyme is responsible for joining the fragments on the lagging strand?

a)

helicase

b)

DNA polymerase

c)

topoisomerase

d)

ligase

7.

How do the three types of RNA work together?

a)

mRNA carries message, tRNA carries amino acids, and rRNA makes ribosome

b)

mRNA makes ribosomes, tRNA carries amino acids, and rRNA relays information

c)

mRNA carries amino acids, tRNA transfer message, and rRNA makes ribosome

d)

mRNA is made, tRNA holds the DNA in place, and rRNA removes the deoxyribose

8.

Where does translation take place in prokaryotes & eukaryotes?

a)

Prokaryotes - cytosol; Eukaryotes - cytosol or nucleus

b)

Prokaryotes - cytosol or rough ER; Eukaryotes - cytosol

c)

Prokaryotes - cytosol; Eukaryotes - cytosol or rough ER

d)

Prokaryotes - cytosol or nucleus; Eukaryotes - cytosol

9.

What is the sequence of nucleotides on mRNA read in triplets called?

a)

anticodon

b)

codon

c)

triplet box

d)

wobble

10.

Identify which molecules bind to the promoter region

a)

Ligase

b)

Topoisomerase

c)

DNA polymerase

d)

RNA polymerase

11.
What is the flow of genetic information in cells from DNA to protein? (Central Dogma)
a)
RNA to DNA to protein
b)
DNA to RNA to protein
c)
protein to DNA to RNA
d)
RNA to protein to DNA
12.
Which RNA bases would pair with TACGAA in transcription? 
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
13.

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though they look and perform completely different?

a)

The two different cells become mutated

b)

The proteins expressed in each cell are different

c)

They actually have different DNA in the two types of cells.

d)

The genome of the different cells changes

14.
Protein molecules around which DNA is tightly coiled in chromatin
a)
Histones
b)
Whey
c)
Casein
d)
Hemoglobin
15.
RNA polymerase moves in which direction along the DNA?
a)
5' to 3' 
b)
3' to 5' along the template strand
c)
3' to 5' along nontemplate(coding) strand
d)
5' to 3' along the template strand
16.
Which of the following is an example of post-transcriptional control of gene expression?
a)
the addition of methyl groups to cytosine bases of DNA
b)
the binding of transcription factors to a promoter
c)
the removal of introns and splicing together of exons
d)
gene amplification contributing to cancer
17.
The parts of a gene that do NOT code for amino acids in a protein are called
a)
introns
b)
exons
c)
codons
d)
anticodons
18.
The production of mature mRNA in eukaryotes involves
a)
cutting introns out and spicing exons together
b)
adding the 5' cap
c)
adding the 3' poly A tail
d)
all of these are correct
19.
What is the function of the poly-A tail in mRNA?
a)
to add modified guanin to the 3' end of the mRNA
b)
to indicate the site of translational termination
c)
to code for the binding of RNA polymerase to the DNA
d)
to help protect the mRNA from degradation by hydrolytic enzymes 
20.
What amino acid sequence will be produced based on the mRNA codon sequence
5'-AUG-UCU-UCG-UUA-UCC-UUG-3'
a)
met-ser-leu-ser-leu-ser
b)
met-ser-ser-leu-ser-leu
c)
met-leu-phe-arg-glu-glu
d)
met-glu-arg-arg-glu-leu
21.
Smaller segments of RNA nucleotides that transport amino acids to the ribosomes.
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
22.
Translation is crucial to the process of making proteins. Which statement best describes what takes place during translation? 
a)
A copy of chromosomal DNA is created 
b)
Information in mRNA is converted into a sequence of amino acids in a protein 
c)
A RNA copy of a DNA strand is made.
d)
Instructions from DNA in the nucleus are brought to the cytoplasm 
23.
Which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
24.
The anticodon is located on 
a)
DNA
b)
mRNA
c)
tRNA
d)
rRNA

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