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Biology
Formative Assessment 7
1. The process of DNA replication is shown in the diagram below.
1
2
3
4
5
Which of the following best identifies the strand or strands of DNA that are identical to strand 1?
A.
B.
C.
D.
strand 2 only
strand 5 only
both strands 3 and 4 only
both strands 4 and strand 5
2. As a cell prepares to divide during the cell cycle, DNA replication must take place. During
the S-phase, DNA strands unwind and replication occurs along the 2 separated strands. What is
the main purpose of DNA replication?
A. During DNA replication, a copy of RNA is made which is used as a code for protein
synthesis.
B. During DNA replication, proteins are made which are important in maintaining
homeostasis.
C. During DNA replication, proteins unwind to provide a template for making identical
DNA strands.
D. During DNA replication, copies of DNA are made so there is a continuous supply of
DNA available for transcription.
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Biology
Formative Assessment 7
3. Which of the following accurately depicts the synthesized DNA during replication?
A. U – G – A – C – C – T
A–C–T–G–G–A
B. T – C – C – A – G – A
A–G–G–U–C–T
C. A – A – A – T – C – G
T–T–T–A–G–C
D. C – C – T – U – A – G
G–G–A–T–U-C
4. During a laboratory exercise in class, Wei is asked to observe cells from different organisms. Her
teacher asks her to list structures that are found in all cells. Which of the following could be found in all
the cells that she studied?
A.
B.
C.
D.
cell wall, cytoplasm, DNA
cell membrane, cell wall, DNA
cell membrane, cytoplasm, DNA
cell membrane, centrioles, DNA
5. Which of the following reflects the protein synthesized from the DNA strand shown below?
C–T–T–A-C-G-C-C-T–A–A–A–C–T–C–C-A
A. The first 3 nucleotides are not a start codon, therefore, a polypeptide cannot be
synthesized.
B. G – A – A – U – G – C – G – G – A – U – U – U - G – A – G – G - U
C. glu – cys – gly – phe - glu –
D. met – arg – ile
6. For this question refer back to the DNA strand in question 3. If an insertion of a Cytosine (C)
occurred at the point indicated by the arrow, what would be the most likely effect?
A. The protein will not change since the insertion occurred in a stop codon.
B. The protein will be unchanged, since the insertion occurred in a non-coding area.
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Biology
Formative Assessment 7
C. The protein will change since the insertion occurred at the end of the DNA sequence.
D. The protein will change since the addition of another codon, adds an additional amino
acid.
7. Which of the following mutations would most likely be passed along to an organism’s
offspring?
A. Mutations which occur involve the translocation of chromosomes in gametes during
meiosis.
B. Mutations which occur during crossing over during the prophase stage of mitosis.
C. Mutations which occur in both DNA strands synthesized during the S-phase of the cell
cycle.
D. Mutations which occur in somatic cells during cell division.
8. Which of the following changes is least likely to produce a phenotypic change in an organism
and why?
A. GAU to GGU because a change in the second amino acid of a codon does not have
much effect on the protein produced.
B. AUG to AUA because as long as the first to amino acids are the same, there is little
effect on the protein produced.
C. UGA to UAA because both code for a stop codon therefore there is no effect on the
protein produced.
D. UAG to UAC because a change in the last amino acid of a codon, produces very little
change.
9. A DNA strand is provided below. What will be the resulting strand if transcription of this DNA
occurs?
T-A–C–C–G–T–A–G–G
A.
B.
C.
D.
T–A–C–C–G–T–A–G–G
A–U–G–G–C–A–U–C–C
A–T–G–G–C–A–T–C–C
U–T–G–G–C–U–T–C–C
10. Which of the following peptide chains will be formed from the RNA strand below.
A–U–G–A–C–C–A–U–G–U–A–G–C–C-C
A. Met – Ile
B. Met – Thr - Met
C. Met – Thr – Met – Pro
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Biology
Formative Assessment 7
D. Met – Ile – Met - Leu
KEY
Question
1
2
3
4
5
6
7
8
9
10
Answer
Benchmark
SC.912.L.16.3
SC.912.L.16.3
SC.912.L.16.3
SC.912.L.16.9
(assessed as SC.912.L.16.3)
SC.912.L.16.5
SC.912.L.16.4
SC.912.L.16.4
SC.912.L.16.5
SC.912.L.16.5
SC.912.L.16.5
DOK
3
3
3
3
2
3
3
3
3
3
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