WGU Student Portal _ Biochemistry Coaching Report 2021 (Graded A+)

PRE-ASSESSMENT: BIOCHEMISTRY PJEO
Attempt #1
Status: Not Passed



1.




Which mRNA sequence results in a polypeptide that contains three amino acids?



YOUR CORRECT
ANSWER ANSWER


5' - CUU GAU ACU UAG - 3'

5' - UAU GCC CUA CGA - 3'

5' - AUC CAG UAA AAG - 3'

5' - GUC UGA CAC CGG - 3'



2.

,Which template strand DNA sequence would result in the amino acid (Ser)?




YOUR CORRECT
ANSWER ANSWER


5' – CGA - 3'

5' - AGC - 3'

5' – TCG - 3'

5' - TAG - 3'



3.
What is the complementary sequence for the following DNA sequence?

5’ – GCC ATC TCG AAT – 3’

YOUR CORRECT
ANSWER ANSWER

, YOUR CORRECT
ANSWER ANSWER


5’ – CGG TAG AGC TTA – 3’

5’ – ATT CGA GAT GGC – 3’

5’ – TAA CGA GAT CCG – 3’

5’ – CGG ATG TCG TTA – 3’



4.
Assuming 100% reaction efficiency, how many DNA copies are created after the
completion of four complete PCR cycles?

YOUR CORRECT
ANSWER ANSWER


24

16

8

4



5.
What is the function of DNA polymerase in the process of PCR?

YOUR CORRECT
ANSWER ANSWER


It separates the two DNA strands so that replication may
occur.

It recognizes the primers and uses the available dNTPs to
replicate the template DNA sequence.

, YOUR CORRECT
ANSWER ANSWER


It synthesizes primers and uses the available dNTPs to
replicate the template DNA sequence.

It links the products of PCR together to generate a complete
strand.



6.




115 116 117 118 − Amino Acid Number
Tyr Gly Thr Pro − Amino Acid Sequence
TAC GGG ACA CCA − DNA Sequence

What is the amino acid in position 118 that results from a single nucleotide insertion
immediately following the three guanines that encode for glycine 116?



YOUR CORRECT
ANSWER ANSWER


Thr

Pro