Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.
com/courses/15021/quizzes/134051
Final Exam
Due Jan 21 at 10:30am Points 20 Questions 20
Available Jan 21 at 9am - Jan 21 at 10:30am about 2 hours Time Limit None
Instructions
Final examination for Molecular Biology
This quiz was locked Jan 21 at 10:30am.
Attempt History
Attempt Time Score
LATEST Attempt 1 50 minutes 13 out of 20
Score for this quiz: 13 out of 20
Submitted Jan 21 at 9:50am
This attempt took 50 minutes.
Question 1 1 / 1 pts
Select the statement which describes the truth about transcription and
translation
1 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct!
an mRNA molecule is synthesized from a parent DNA molecule during
transcription
Question 2 1 / 1 pts
The leading strand of a DNA molecule has the following sequence:
5’-CGCATGTAGCGA-3’
Which of the following sequences is complementary to the leading
strand shown above?
Correct!
3’-GCGTACATCGCT-5’
Question 3 0 / 1 pts
What would be the effect of adjoining the Okazaki fragments that are
adjacent to each other?
You Answered The leading strand replication is enhanced
Correct Answer Telomeres loose their genetic material
2 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Question 4 0 / 1 pts
On the complementary bases found in nucleic acids, which of the
following has the highest bond dissociation energy?
Correct Answer G:C
You Answered A:T
Question 5 0 / 1 pts
Some antibiotics, like doxycycline, binds to a ribosomal unit to inhibit
proliferation of bacteria. If doxycycline only affects the 70S ribosomal
unit, how will it affect humans?
You Answered
Doxycycline will be uptaken by organic-based receptors in cells and
broken down through lysosome action
3 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct Answer
It will not, since humans has 60S and 40S ribosomal unit while
prokaryotes has 50S and 30S ribosomal unit
Question 6 1 / 1 pts
Suppose that a toxin is ingested of a species and caused point mutation
by insertion, which of the following will be highly affected in the end
result of the protein synthesis
Correct!
Exons
Question 7 1 / 1 pts
When can a mutation occur? Choose all correct answers
4 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct!
Replication
Question 8 1 / 1 pts
Suppose that a virus containing triple stranded DNA will infect a
mammalian cell, what could possibly happen?
Correct!
DNA will be cleaved
Question 9 0 / 1 pts
You extracted cells from your liver, heart, and skin. Which of the
following will be identical in nature?
You Answered messenger RNA
Correct Answer ribosomal RNA
5 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct Answer DNA
Question 10 0 / 1 pts
In a bacterial cell, what would be the basic function of the mRNA
molecule?
Correct!
Involves in the regulation of the expression of genes
You Answered
To transport genetic information from the nuclear compartment into the
cytoplasm
Question 11 1 / 1 pts
How many polymerases are present in a replication fork?
Correct!
3
6 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Question 12 1 / 1 pts
DNA helicase travels along _________
Correct!
Lagging strand template in 5’→3’ direction
Question 13 1 / 1 pts
Association of primase with DNA template is brought about by the
interaction of primase with _________________
Correct!
Helicase and SSB protein
Question 14 1 / 1 pts
7 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
How is the strength of the interaction between primase and helicase
which regulates the length of Okazaki fragments?
Correct!
Strong association short fragment
Question 15 0 / 1 pts
Which of the following enzyme is not required for the synthesis of
lagging strand?
Correct Answer Gyrase
You Answered
Helicase
Question 16 1 / 1 pts
The RNA polymerase core enzyme converts into a holoenzyme on the
addition of the _________ subunit.
8 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct!
σ
Question 17 1 / 1 pts
A stretch of which nucleotide in the DNA acts as the termination signal?
Correct!
Poly A
Question 18 1 / 1 pts
With respect to polymerization of amino acids which of the following
statements is wrong?
Correct!
9 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
The polymerization machinery consists of fifty proteins and two RNA
molecules
Question 19 1 / 1 pts
With respect to the subunits of ribosome which of the following is
wrongly paired?
Correct!
Large subunit = decoding center
Question 20 0 / 1 pts
Where does ribosome gets the energy for the formation of peptide
bond?
You Answered Energy released during peptidyl transferase reaction
10 of 11 1/22/2021, 9:18 AM
Final Exam: CHE 320-CHE31S1 - Molecular Biology https://tip.instructure.com/courses/15021/quizzes/134051
Correct Answer Breaking of acyl bond
Quiz Score: 13 out of 20
11 of 11 1/22/2021, 9:18 AM
