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Protein Synthesis

Total questions: 40

Worksheet time: 13mins

Name
Class
Date
1.

The first stage of protein synthesis is called a

a)

mitosis

b)

replication

c)

translation

d)

transcription

2.

The second stage of protein synthesis is called a

a)

mitosis

b)

replication

c)

translation

d)

transcription

3.

Which of the following summarizes what is happening during transcription?

a)

mRNA ⇒ DNA

b)

DNA ⇒ mRNA

c)

mRNA ⇒ protein

d)

protein ⇒ mRNA

4.

Which of the following summarizes what is happening during translation?

a)

mRNA ⇒ DNA

b)

DNA ⇒ mRNA

c)

mRNA ⇒ protein

d)

protein ⇒ mRNA

5.

Which statement about transcription and translation is correct?

a)

Transcription takes place in the nucleus, whereas translation takes place in the cytoplasm.

b)

Translation takes place in the nucleus, whereas transcription takes place in the cytoplasm.

6.

Which of the following is the complementary mRNA sequence to this DNA strand: AAA TCG TTG CCC

a)

AAA TCG TTG CCC

b)

TTT AGC AAC GGG

c)

UUU AGC AAC GGG

d)

UUU TGC TTC GGG

7.

Which of the tRNA anticodons are complementary to the following mRNA codons: UUU-CCG-AAA

a)

UUU-CCG-AAA

b)

AAA-GGC-TTT

c)

AAA-GGC-UUU

d)

TTT-GGC-UUU

8.

What amino acid is represented by the codon UUA?

a)

Phenylalanine

b)

Tyrosine

c)

Leucine

d)

Stop codon

9.

Which codon can code for tryptophan?

a)

U G G

b)

A G U

c)

C A A

d)

A U G

10.

Transcription takes place in the

a)

Cytoplasm

b)

Cell Membrane

c)

Nucleus

d)

vacuole

11.

Translation takes place in the

a)

cytoplasm

b)

cell membrane

c)

nucleus

d)

vacuole

12.

A group of three nucleotide bases in mRNA that specify a particular amino acid is called a/an

a)

codon

b)

anticodon

13.

Proteins are made at the

a)

nucleus

b)

ribosome

c)

vacuole

d)

nuclear membrane

14.

Which represents the correct flow of genetic information (central dogma)?

a)

DNA →\rightarrow  RNA →\rightarrow  Protein

b)

 RNA →\rightarrow  DNA →\rightarrow  Protein

c)

Protein →\rightarrow  RNA →\rightarrow  DNA

d)

DNA →\rightarrow  Protein →\rightarrow  RNA

15.

________ can leave the nucleus.

a)

DNA

b)

RNA

c)

Both DNA and RNA

d)

nothing

16.
C always matches with __
a)
A
b)
U
c)
C
d)
G
17.
what does mRNA do?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
18.
What is the function of DNA helicase?
a)
Attach new nucleotides
b)
To unzip the strands of DNA
c)
Remove nucleotides
d)
To perform crossing over
19.

Amino acids are attached to the top of which type of RNA?

a)

tRNA (transfer RNA)

b)

mRNA (messenger RNA)

c)

rRNA (ribosomal RNA)

20.

RNA does not contain which base?

a)

Adenine (A)

b)

Cytosine (C)

c)

Thymine (T)

d)

Uracil (U)

e)

Guanine (G)

21.

Replicate the following strand of DNA: 
AAT CAT GGA

a)

AAT CAT GGA

b)

TTA GTA CCT

c)

UUA GUA CCU

d)

GGA TAU CUA

22.
Which of the following describes RNA?
a)
RNA is usually double-stranded and contains the base thymine
b)
RNA is usually single-stranded and contains the base uracil
c)
RNA is longer than DNA and uses five bases to encode information
d)
RNA is made in the nucleus of eukaryotic cells and stays there to carry out its functions
23.
How does RNA differ from DNA?
a)
RNA contains uracil and deoxyribose
b)
RNA contains ribose and thymine
c)
RNA contains uracil and ribose
d)
RNA contains adenine and ribose
24.
Messenger RNA carries a copy of the DNA code.
a)
true
b)
false
25.
DNA travels outside of the nucleus.
a)
true
b)
false
26.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
27.
In DNA, Adenine pairs with ___________. 
a)
Guanine
b)
Cytosine
c)
Thymine
d)
Uracil
28.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
29.

Choose the sequence of the mRNA strand that would be match up with to the following strand:

G T A G T C A

a)

U A T U A G A

b)

A C G A C T G

c)

C A U C A G U

d)

C A T C A G T

30.

Why does a human body need proteins?

a)

To place amino acids in a specific order

b)

To guard against harmful mutations

c)

To send messages to the cell's cytoplasm

d)

To perform important bodily functions

31.

When a nitrogen base (nucleotide) is removed from a gene, this is called a ________ mutation.

a)

removal

b)

deletion

c)

substitution

d)

insertion

32.

change in the DNA sequence

a)

protein

b)

error

c)

mutation

d)

mutagen

33.

when one or more nucleotides are deleted

a)

substitution

b)

addition

c)

remake

d)

deletion

34.

one nucleotide is replaced with a different nucleotide

a)

addition

b)

substitution

c)

deletion

d)

inversion

35.

when one or more nucleotides are inserted

a)

addition

b)

deletion

c)

insertion

d)

remake

36.

when a portion of the DNA is shifted in one direction due to a deleition or insertion

a)

frameshift

b)

gene

c)

deletion

d)

substitution

37.
What mutation has occurred here? 
T-G-A-C-C-A
T-G-A-G-C-A
a)
Substitution
b)
Deletion
c)
Insertion
d)
Frameshift 
38.

DNA molecule segment is : TTA CGC AAG
The mutated DNA segment is TTC GCA AG. This is an example of ___ mutation.

a)
Substitution
b)
Deletion
c)
Insertion
d)
Inversion
39.

Genetic mutations can be...

a)

beneficial, harmful, or neutral

b)

beneficial only

c)

harmful only

d)

neutral only

40.

The two kinds of frameshift mutations are:

a)

Deletion and insertion

b)

Substitution and silent

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