Practice Test DNA & Protein Synthesis
25 Total Points
Directions: For each question below, write the correct letter in the space provided on your answer document.
1. Which of the following scientists used x-rays to determine
that DNA was a helix?
A.
B.
C.
D.
Hershey & Chase.
Griffith.
Franklin.
Chargaff.
2. Which of the following scientists showed that the percentages of adenine molecules in DNA are about
equal to the percentage of thymine molecules?
A.
B.
C.
D.
Mendel.
Watson & Crick.
Franklin.
Chargaff.
3. DNA replication results in two DNA molecules
A.
B.
C.
D.
each with two new strands.
one with two new strands and the other with two original strands.
each with one new strand and one original strand.
each with two original strands.
4. During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the base
A.
B.
C.
D.
TCGAAC.
GATCCA.
AGCTTG.
GAUCCA.
5. Which type(s) of RNA is (are) involved in protein synthesis?
A. transfer RNA only
B. messenger RNA only
C. ribosomal RNA and transfer RNA only
D. messenger RNA, ribosomal RNA, and transfer RNA
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6. What is produced during transcription?
A.
B.
C.
D.
RNA molecules
DNA molecules
RNA polymerase
proteins
Use the following diagram to answer question 7-8.
7. What does ACG code for?
A.
B.
C.
D.
valine
Start
proline
threonin
8. Which of the following codons code for Stop?
A.
B.
C.
D.
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ACU
GCA
UGA
UUU
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Use the following diagram to answer question 9.
9. Which labeled structure in the figure above made structure D?
A.
B.
C.
D.
Structure A
Structure B
Structure C
Structure E
10. Protein synthesis is determined by the transcription of RNA and translation of
A.
B.
C.
D.
starch synthesis.
nucleotide synthesis.
lipid synthesis
the amino acid sequence.
11. The sequence of nucleotides in a messenger RNA molecules is determined by the sequence of nucleotides
in a ___
A.
B.
C.
D.
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tRNA molecule.
protein molecule.
polysaccharide molecule.
DNA molecule.
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12. A change in the nucleotide sequence of a DNA molecule is called a/an
A.
B.
C.
D.
mutation.
transcription.
translation.
replication.
13. A group of friends went to the tanning beds for homecoming to get their tan on. Several years later, one
develops skin cancer. Was this a result in a mutation occurring in a/an
A.
B.
C.
D.
sex cell?
body cell?
liver cell?
lung cell?
14. When mutations occur in sex cells, they
A.
B.
C.
D.
cannot be passed down to the offspring.
can be passed down to the offspring.
only affect the first born.
affect all offspring.
15. Mutations in DNA can be
A.
B.
C.
D.
harmful.
beneficial.
lethal.
all of the above.
16. Watson & Crick were the first scientists to make a 3D model of DNA. In the space provided on the answer
document, draw and label what a segment of DNA would look like on their model. Be sure to include sugar,
phosphate groups, and at least two complementary nitrogenous bases. (4 points)
17. Name two differences between DNA and RNA. (2 points)
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Use the diagram below to answer question 18.
18. What is the sequence of amino acids which result from this strand of DNA? Show your work. on the answer
document provided. (4 points)
T A C A C C G T G A C T
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