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PROTEIN SYNTHESIS: TRANSCRIPTION & TRANSLATION

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.
The function of _____ is to transport amino acids in the cytoplasm to the ribosome.
a)
rRNA
b)
tRNA
c)
mRNA
d)
DNA
2.
In proteins, the amino acid order is determined by 
a)
nitrogenous bases in RNA
b)
random placement
c)
nitrogenous bases in DNA
d)
there is no order
3.
This molecule carries genetic information from the nucleus to the ribosomes in the cytoplasm.
a)
rRNA
b)
tRNA
c)
mRNA
d)
DNA
4.
Which of these nitrogenous bases is NOT in RNA?
a)
Uracil
b)
Thymine
c)
Cytosine
d)
Guanine
5.

The monomers units of DNA and RNA are

a)

amino acids

b)

monosaccharides

c)

nucleotides

d)

fatty acids

6.

The signal that marks the end of a gene and causes transcription to stop is

a)

polymerase

b)

ligase

c)

a terminator

d)

methionine

7.

The RNA codon AUG means

a)

add amino acid methionine

b)

start the protein here

c)

add the amino acid tyrosine

d)

end the polypeptide chain here

8.

Which of the following occurs when RNA polymerase attaches a promoter DNA?

a)

elongation of mRNA

b)

termination of mRNA

c)

initiation of a protein

d)

initiation of mRNA

9.

A gene is

a)

the same as a chromosome

b)

the info for making a polypeptide

c)

made of RNA

d)

made of protein

10.

When RNA is being made, the RNA base ____ always pairs with the base ___ in DNA.

a)

U-T

b)

T-G

c)

U-A

d)

A-U

11.

tRNA plays a role in which of the following ?

a)

picking up the amino acid specified by the anticodon

b)

recognizing the appropriate codons in mRNA

c)

translating codons into amino acids

d)

all of these are correct

12.

Which organelle is the location where protein is made?

a)

Ribosome

b)

Nucleus

c)

Cytoplasm

d)

Nucleotide

13.

During transcription, this type of ribonucleic acid is responsible for copying the DNA and brining it out of the nucleus.

a)

tRNA

b)

mRNA

c)

rRNA

d)

dRNA

14.

What is the purpose of this process?

a)

To translate the genetic code into a specific sequence of amino acids

b)

To synthesize amino acids used to unzip strands of DNA and copy the genetic code

c)

To assemble nucleotides in an mRNA chain along a DNA template

d)

To replicate the DNA of an organism before cell division

15.

The anti-codon

a)

contains a sequence the same as the mRNA codon

b)

contains a sequence complementary to the mRNA codon

c)

contains the base thymine

16.
Which amino acid is made from the RNA codon UUA?
a)
Phenylalanine
b)
Leucine
c)
Serine
d)
Tyrosine
17.

What is the structure that is labeled by an X?

a)

Anticodon

b)

Amino acid

c)

Codon

d)

Polypeptide

18.
Which phrase best describes translation?
a)
converts mRNA into a polypeptide
b)
catalyzes bonds between amino acids
c)
produces RNA from DNA molecules
d)
recycles tRNA molecules for reuse
19.

What is the purpose of strand "A"?

a)

For DNA replication

b)

To make more DNA

c)

To serve as a template for the synthesis of mRNA

d)

To carry the genetic information to the cytoplasm

20.
Does the order of amino acids in a protein matter?
a)
YES!
b)
NO!