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Translation of Amino Acids

Total questions: 8

Worksheet time: 4mins

Name
Class
Date
1.

What is the term for a three-nucleotide sequence that codes for an amino acid?

a)

base

b)

codon

c)

amine

d)

serine

2.

How many amino acids are used to make up the all of the proteins in the human body?

a)

16

b)

20

c)

23

d)

46

3.

A tRNA that carries the amino acid methionine pairs with which type of codon?

a)

serine codon

b)

tRNA codon

c)

start codon

d)

anticodon

4.

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

5.

Which of the following is the site of translation?

a)

vacuole

b)

lysosome

c)

nucleus

d)

ribosome

6.

How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide.

CGAUAC

a)

1

b)

3

c)

2

d)

5

7.

A template strand of DNA in a gene reads:

3' CTC CGC TTT TAG 5'

Using the codon chart, what is the sequence of amino acids that is produced after translation?

a)

Gln - Ala - Asn - Met

b)

Leu - Arg - Phe - Stop

c)

Glu - Ala - Lys - Ile

d)

Glu - Ala - Lys - Thr

8.

The following is an mRNA transcript. Using the codon chart, find the stop and start codons (they are not simply the first and last codons). Hint: Methionine is always the start codon. How many amino acids are going to be translated from this gene?

AAUUUGCAUGUUGGCAAAUCGUCCUUGAGG

a)

10

b)

7

c)

5

d)

2