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Biol 1408 Ch 10-11 Quiz Name:_______________________________
1. Please identify the molecule below:
5 ‘ -ACTCGATTACGATACGA-3ʼ
a) DNA
b) mRNA
c) tRNA
d) rRNA
e) It cannot be determined
2. If a complimentary strand of RNA were made to the molecule in question 1,
what would it look like?
a) 5ʼ-TGAGCTAATGCTATGCT-3ʼ
b) 5ʼ-UGAGCUAAUGCUAUGCU-3ʼ
c) 5ʼ-TCGTATCGTAATCGAGT-3ʼ
d) 5ʼ-UCGUAUCGUAAUCGAGU-3ʼ
e) None of the above are correct
3. The following sequence is destined to be translated into a protein:
5ʼ- AUG UGU CCC CUG AAA -3ʼ
However, a mutation occurs that results in the molecule being altered to:
5ʼ- AUG UGA CCC CUG AAA -3ʼ
What effect will this have on the protein that is made off of the mutated molecule
compared to the molecule before the mutation occurred?
a) The protein from the mutated molecule will be longer than that of the non-mutated
molecule
b) The protein from the mutated molecule will be shorter than that of the non-mutated
molecule
c) The protein from the mutated molecule will be the same length as that of the nonmutated molecule
d) The mutated molecule will not even make a protein because it cannot signal for
translation to start
e) None of the above are correct
4. Which of the following statements is not true about DNA polymerase?
a) It reads the template strand in the 5ʼ to 3ʼ direction
b) It writes the new daughter strand in the 3ʼ to 5ʼ direction
c) It uses the nitrogenous bases A, C, G, and U to make the new daughter DNA strand
d) All of the above statements are true regarding DNA polymerase
e) None of the above statements are true regarding DNA polymerase
Biol 1408 Ch 10-11 Quiz Name:_______________________________
5. The diagram below shows DNA replication is occurring. Please choose the
strand of DNA that would be classified as the "leading" strand of DNA.
a) A
b) B
c) C
d) D
e) None of the above are the leading strand
6. Which of the following is not used during translation?
a) DNA
b) mRNA
c) tRNA
d) rRNA
e) All of the above are used in translation
7. In the below molecule of RNA, the shaded regions are exons, while the light
regions are introns.
Knowing this, which of the following could not be a mature mRNA molecule after
splicing has occurred?
a) A molecule composed of A,C,E
b) A molecule composed of C, G
c) A molecule composed of A, B, E
d) A molecule composed of D, F
e) Answers c & d
Biol 1408 Ch 10-11 Quiz Name:_______________________________
8. Which of the following is not a form of RNA?
a) mRNA
b) rRNA
c) dRNA
d) tRNA
e) All of the above are forms of RNA
9. The following diagram shows the protein products that are made with a normal
gene and in an instance when that gene is mutated. What kind of mutation is
shown in the mutated gene?
a) Base substitution
b) Insertion
c) Deletion
d) A&C
e) None of the above are correct
10. The amino acid sequence that results from the mutated sequence means that
this particular mutation could also be classified as a:
a) Frameshift mutation
b) Missense mutation
c) Nonsense mutation
d) Silent mutation
e) None of the above are correct
11. The central dogma of biology states that:
a) DNA is used to generate Protein which is used to generate RNA
b) RNA is used to generate Protein which is used to generate DNA
c) Protein is used to generate DNA which is used to generate RNA
d) RNA is used to generate DNA which is used to generate Protein
e) DNA is used to generate RNA which is used to generate Protein
Biol 1408 Ch 10-11 Quiz Name:_______________________________
12. The following molecule is occupying a particular site of the ribosome during
translation.
Please identify this molecule:
a) DNA
b) Small Ribosomal subunit
c) Large Ribosomal subunit
d) mRNA molecule
e) tRNA molecule
13. As previously stated, the molecule in question 12 occupies a particular site of
the ribosome. Based upon its appearance in the previous question which site
would it occupy? HINT: What, if anything, is attached to the molecule?
a) A site
b) P site
c) E site
d) G site
e) O site
14. What signals the end of transcription in prokaryotes?
a) A stop codon
b) A terminator sequence
c) A stop anticodon
d) An RNA primer
e) None of the above would stop transcription in prokaryotes
15. 23% of a molecule of DNA is cytosine (C). This molecule of DNA would be
composed of what percent of adenine (A)?
a) 11.5%
b) 23%
c) 27%
d) 46%
e) 54%
Biol 1408 Ch 10-11 Quiz Name:_______________________________
16. Which of the following doesnʼt have to happen before a molecule of mRNA
can leave the nucleus of a cell?
a) The introns must be spliced out of the RNA molecule
b) Transcription much occur
c) After splicing, the exons are ligated together
d) Translation must occur
e) All of the above must happen before the molecule of mRNA can leave the nucleus
17. Which of the following is a factor that could prevent the transcription of a
gene?
a) Activator
b) Transcription factor
c) Promoter
d) Repressor
e) Operator
18. Which of the following is responsible for producing of the initial molecule of
RNA that is made during Transcription?
a) DNA Polymerase
b) RNA Polymerase
c) Ligase
d) Ribosome
e) None of the above are correct
For questions 19-24, please choose the answer that best matches each term.
d
b Promoter
20. _____
e Terminator
21. _____
a Lagging Strand
22. _____
f 3
23. _____
c 2
24. _____
19. _____ Origin of Replication
a) Composed of fragments of DNA because it is being made away from the replication
fork
b) Site of the initiation of transcription
c) Number of Hydrogen bonds that form between an A and a T
d) Site of the initiation of DNA duplication
e) Signals the end of Transcription
f) Number of Hydrogen bonds that form between a G and a C
Biol 1408 Ch 10-11 Quiz Name:_______________________________
25. The region of a tRNA that matches a triplet on the mRNA strand is called an
anticodon. TRUE / FALSE
26. In the cells of a female, one of the X-chromosomes condenses and the genes on it
are not expressed. TRUE / FALSE
27. The A, P, and E sites used during translation are found in the small ribosomal
subunit. TRUE / FALSE
28. Once a molecule has been duplicated, each of the two new molecules of DNA will
be composed of 50% parental DNA and 50% daughter DNA. TRUE / FALSE
29. To make a polypeptide that was composed of 100 amino acids, the minimum
number of nucleotides that could exist in the mRNA molecule would be 200. TRUE /
FALSE
30. The primary sugar of RNA is ribose. TRUE / FALSE