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Melanin CUA Part 2 Review

Total questions: 34

Worksheet time: 24mins

Name
Class
Date
1.

What is Pheomelanin?

a)

A type of melanin that produces dark brown/black skin

b)

A type of melanin that produces reddish/yellow pigment

c)

An enzyme that controls skin color

d)

An enzyme that produces melanin

2.

A mutation in which only one nucleotide is altered is called a:

a)

Frameshift Mutation

b)

Deletion Mutation

c)

Point Mutation

d)

Insertion Mutation

3.

Mutations are SOMETIMES helpful to the organism.

a)

true

b)

false

4.
Any change in the sequence of DNA is...
a)
transgenic shift
b)
Single Genotype
c)
Monohybrid Trait
d)
Mutation
5.

WHat type of mutation is represented below:

Normal-

GAG-CTC-GAC-AGA

Mutant

GAG CTC-CAC-AGA

a)

no mutation

b)

substitution

c)

insertion

d)

deletion

6.
Which of the following would result in a frameshift mutation?
a)
Insertions only
b)
Substitution only
c)
Deletion only
d)
Insertions and Deletions
7.
Why are insertion and deletion (frameshift) mutations so harmful?
a)
They change all of the codons from the mutation on down the line, which changes the amino acid sequence
b)
They insert things that an organism doesn't need.
c)
They often delete things that organisms need.
d)
Insertion and deletions are not any more harmful than substitution mutations.
8.

Where does translation take place?

a)

ribosome

b)

chloroplast

c)

nucleus

d)

mitochondria

9.

What brings the amino acids to the ribosome?

a)

mRNA

b)

tRNA

c)

rRNA

d)

DNA

10.
What would be the tRNA anticodon for the mRNA codon CAG?
a)
GTC
b)
GUC
c)
CUG
d)
CAG
11.
How many amino acids are coded for by this sequence of nucleotides:
ATG GGA ACT CCA
a)
4
b)
2
c)
6
d)
12
12.
Which phase of which process does this picture show?
a)
Transcription
b)
Translation
c)
Replication
13.

What is the job of tRNA ?

a)

carry amino acids to the ribisomes

b)

carry ribisomes to the ER

c)

carry glucose to mitochondria

d)

carry mRNA out of the nucleus

14.

What has codons?

a)

DNA

b)

mRNA

c)

tRNA

d)

rRNA

15.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA
a)
Met-Pro-Ala-Val
b)
Met-Pro-Val
c)
Tyr-Gly-His
d)
Tyr-Gly-Arg-His
16.

Which of the following would be a nucleotide found in DNA?

a)

Ribose + phosphate + uracil

b)

Deoxyribose + phosphate + uracil

c)

Deoxyribose + phosphate + thymine

d)

Ribose + phosphate + adenine

17.
How many bases are in one codon?
a)
1
b)
2
c)
3
d)
4
18.
What is this a picture of?
a)
mRNA
b)
tRNA
c)
rRNA
d)
pRNA
19.
What process is going on in this photo? 
a)
Transcription 
b)
Translation 
c)
Replication 
d)
All the above 
20.
What process is occurring in this photo?
a)
Transcription
b)
Translation
c)
mRNA is matching with amino acids
d)
tRNA is transcribing the DNA
21.
Which RNA bases would pair with TACGAA in transcription? 
a)
AUGCUU 
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
22.
_______ is made during transcription and ________ is made during translation.
a)
mRNA / a protein
b)
a protein / mRNA
c)
Ribosome / Nucleus
d)
mRNA / tRNA
23.
The diagram below represents a portion of a DNA molecule. The letters represent different types of 
a)
sugar molecules
b)
nitrogen bases
c)
enzymes
d)
proteins
24.

What is the amino acid sequence coded by the DNA : TAC-AGC-GGT

a)

Met-Ser-Gly

b)

Asn-Ser-Gly

c)

Met-Leu-Pro

d)

Asn-Leu-Pro

25.

What amino acid sequence would the following mRNA sequence code for? AAC-GAG-CAC-GGG

a)

Asn-Val-His-Gly

b)

Phe-Leu-Val-Pro

c)

Asn-Glu-His-Gly

d)

Phe-Val-Pro-His

26.

What is the yellow portion of the molecule shown in the picture?

a)

Nitrogen bases

b)

Deoxyribose and phosphate

c)

Hydrogen bonds

d)

Ribose and phosphate

27.

What is the complementary strand of DNA for the strand AACGTACGG?

a)

UUGCAUGCC

b)

AAGCATACG

c)

TTGCATCGG

d)

TTGCATGCC

28.

What makes up the "steps" of the ladder in DNA?

a)

Nitrogen bases

b)

Hydrogen bonds

c)

Deoxyribose and phosphate

d)

Ribose and phosphate

29.

On a DNA strand, if there is 43% adenine, then how much guanine is there?

a)

43%

b)

86%

c)

7%

d)

17%

30.

What is the percent of guanine in a DNA molecule if the percent of cytosine is 15%

a)

85%

b)

35%

c)

15%

d)

30%

31.

Which letter indicates a nucleotide?

a)

A

b)

B

c)

C

32.

What could be the possible mRNA sequence for the following amino acid sequence. Phe-Lys-Glu?

a)

UUA AAA GAA

b)

UUA AAC GAA

c)

UUC AAA GAA

d)

UUC AAC GAA

33.

If the mRNA codes for ser, what could the tRNA be?

a)

UCC

b)

UGG

c)

ACC

d)

AGG

34.

Which would likely cause more harm, a mutation that is at the beginning of the DNA sequence for a protein or at the end of the DNA sequence for a protein?

a)

Beginning

b)

End

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