PRE-ASSESSMENT: BIOCHEMISTRY PJEO
Attempt #1
Status: Not Passed
1.
Which mRNA sequence results in a polypeptide that contains three amino acids?
YOUR
ANSWER
CORRECT
ANSWER
5' - CUU GAU ACU UAG - 3'
5' - UAU GCC
...
PRE-ASSESSMENT: BIOCHEMISTRY PJEO
Attempt #1
Status: Not Passed
1.
Which mRNA sequence results in a polypeptide that contains three amino acids?
YOUR
ANSWER
CORRECT
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 resultin the amino acid (Ser)?
YOUR
ANSWER
CORRECT
ANSWER
5' – CGA - 3'
5' - AGC - 3'
5' – TCG - 3'
5' - TAG - 3'
3.
Whatis the complementary sequence for the following DNA sequence?
5’ – GCC ATC TCG AAT – 3’
YOUR
ANSWER
CORRECT
ANSWER
YOUR
ANSWER
CORRECT
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
ANSWER
CORRECT
ANSWER
24
16
8
4
5.
Whatis the function of DNA polymerase in the process of PCR?
YOUR
ANSWER
CORRECT
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
ANSWER
CORRECT
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
Whatis the amino acid in position 118 that results from a single nucleotide insertion
immediately following the three guanines that encode for glycine 116?
YOUR
ANSWER
CORRECT
ANSWER
Thr
Pro
YOUR
ANSWER
CORRECT
ANSWER
His
Met
7.
In sickle-cell disease, the glutamic acid (Glu) at position number seven is mutated to
valine (Val).
What change in codons corresponds to this mutation?
YOUR
ANSWER
CORRECT
ANSWER
GAA to GTA
GAA to GAT
GAC to GTC
GGU to GT
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