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Final

BIO SCI 93 Study Guide - Final Guide: Semiconservative Replication, Deoxyribose, RiboseExam


Department
Biological Sciences
Course Code
BIO SCI 93
Professor
All
Study Guide
Final

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Section E
EXAM VERSION A
BioSci 93
Final Exam
Dec 15th, 2014
1. Ensure that you are sitting at your assigned seat.
2. Record your Name, Student ID # and Seat # on each page of the exam
booklet. Keep your student ID out and visible. We will be checking during
the exam.
3. For multiple choice questions, only use pencils.
Bubble AND write in your student ID # on the scantron card.
Acts of dishonesty during the examination will result in disqualification (score of 0
points) and a permanent letter added to your university transcript file.

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1. Which'of'the'following'DNA'sequences'is'most'likely'to'be'found'at'an'origin'of'
replication:'
a) ATTCGCGGGGCTA'
b) GGCCCGTTAAAGC'
c) ATATTCAAGTTTA'
d) ATGCGCGGGCTAG'
'
2. DNA'can'serve'as'its'own'template'for'replication,'and'it'can'act'as'a'template'for'the'
transcription'to'produce'mRNA.'This'is'because:''
a) Its two strands are held together by easily broken covalent bonds.
b) Its replication is semiconservative.
c) Replication and transcription are thermodynamically spontaneous and require no
enzymes.
d) Its nucleotides can base-pair with both ribose and deoxyribose nucleotides.
e) The enzyme DNA polymerase is able to replicate both DNA and RNA
3. Thymine makes up 42% of the nucleotides in a sample of DNA from an organism.
Approximately what percentage of the nucleotides in this sample will be Cytosine?
a) 8%
b) 16%
c) 31%
d) 42%
e) It cannot be determined from the information provided.
4. Which of the following types of mutation, resulting in an error in the mRNA just after the
AUG start of translation, is likely to have the most serious effect on the polypeptide
product?
a) a deletion of a codon
b) a deletion of a nucleotide
c) a substitution of the third nucleotide in an ACC codon
d) a substitution of the first nucleotide of a GGG codon
e) an insertion of a codon
'
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