Question 6:
(1 mark)
An mRNA has the following codon:
5' GCA 3'.
What tRNA anticodon will bind to this
codon?
The tRNA anticodon 5' 3' will bind to the mRNA codon
5' GCA 3'.
**Please enter your sequence in the 5' to 3' direction.
Deductions will be made if a sequence is inputted in the wrong
direction.**
Question 7:
(1 mark)
A tRNA anticodon has the following sequence:
3' CUA 5'.
What amino acid does it carry?
The amino acid carried on a tRNA with the anticodon 3' CUA
5' is .
**Hint: You will need to consult the genetic code to answer this
question. And watch your 5' to 3' direction.**
Questions 8 to 13 are based on the following
information.
Question 8:
The top strand of the following segment of DNA serves as the
template strand:
3' TACACCTTGGCGACGACT 5'
5' ATGTGGAACCGCTGCTGA 3'
We will refer to this segment of DNA as the original (or
unmutated) sequence.
Please answer the following questions:
(a) What is the mRNA sequence?
The mRNA sequence
is 5' ATGTGGAACCGCTGCTGA 3'. (2 marks)
**Please enter your sequence in the 5' to 3' direction.
Deductions will be made if a sequence is inputted in the wrong
direction.**
(b) Using the mRNA sequence you determined in part
(a) of this question, give the sequence of the protein that would
be translated.
The amino acid sequence for this protein is
N-terminus C-terminus. (2
marks)
**Please note**
The N-terminus refers to the beginning of the primary sequence
for a protein, and the C-terminus refers to the end of the primary
sequence for a protein.
i.e. input the amino acids in the order that they would be
translated.
If a codon encodes for a stop codon, type
STOP.
When inputting your sequence, separate each amino acid with a
hyphen (e.g. Ser-Tyr-STOP).
You will need to consult the genetic code to answer this
question.
Questions 9 to 13 are in reference to the DNA
sequence shown in Question 8.
Question 9:
The original (unmutated) DNA sequence (shown above in
Question 8) has been mutated to the following (this represents the
template strand):
3' TACATCTTGGCGACGACT 5'.
We will refer to this sequence as mutation
#1.
Please note that for simplicity only the template strand for
this mutated segment of DNA is shown.
Answer the following questions:
(a) What is the complete mRNA sequence for the
mutated segment mutation #1?
The mutated mRNA sequence
is 5' AUGACGAACCGCUGCUCA 3'. (2 marks)
**Please enter your sequence in the 5' to 3' direction.
Deductions will be made if a sequence is inputted in the wrong
direction.**
(b) Using the mRNA sequence you determined in part
(a) of this question, give the sequence of the protein that would
be translated.
The amino acid sequence for this protein is
N-terminus C-terminus. (2
marks)
**Please note**
The N-terminus refers to the beginning of the primary sequence
for a protein, and the C-terminus refers to the end of the primary
sequence for a protein.
i.e. input the amino acids in the order that they would be
translated.
If a codon encodes for a stop codon, type
STOP.
When inputting your sequence, separate each amino acid with a
hyphen (e.g. Ser-Tyr-STOP).
You will need to consult the genetic code to answer this
question.