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Midterm

OctTermTest2011.pdf

15 Pages
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Department
Biology
Course Code
Biology 1001A
Professor
Felix Lee

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UNIVERSITY OF WESTERN ONTARIO
B I O L O G Y 1001A
October 29, 2011 Time: 2 Hours
Student No. _________________ Test Room ___________ Row _____
I
NSTRUCTIONS
-
F
OLLOW THE CHECK LIST
!
( ) On your Scantron sheet Fill the bubbles completely
Use HB pencil only
No stray marks or doodles
Make all erasures complete
Yes - Calculators are permitted
(non-programmable only)
No – Borrowing is not allowed
Print name Print clearly
Signature Do your best
Instructor Haffie, MacDougall-Shackleton
Course Bio 1001A
Student number Print clearly/ Bubble neatly
Exam Code 111 – Very important
Section Leave it blank
Answer Sheet Leave it blank
( ) On your Test Book Do not write your name on the cover
Your Scantron answers will be emailed to
your UWO email account within a week.
Review copies of this test will posted
on WebCT for study purposes.
Student number No names please
Test Room The room you’re in right now
Row number We will tell you this
Indicate your answers in the test book. Leave no questions blank.
1) Please place your ID prominently on your desk and sign the
attendance sheet when it comes to you.
2) There are 48 questions in this test. Check your paper
carefully.
3) There is only one fully correct answer for each question.
Part marks may be awarded. Answer all questions. We do
not subtract wrong from right.
4) Indicate your answers in both the test paper and on the
Scantron.
5) It is your responsibility to transfer all answers from the test
book to the Scantron sheet within the 2 hour test period.
6) When finished, please stay seated and raise your hand.
We will collect both your test book and your Scantron
sheet. Test books will be returned to you in tutorial.
Warning
The Scantron marking program has a cheating analysis feature that compares answer patterns for all papers.
It alerts us to similarities. We then check seating arrangements.
Do not sit near your study partners or write the same test codes. Keep your work directly in front of you.
Please help us avoid any and all misunderstandings during these tests.
Challenges
:
Please defend your arguments on this page only. Comments will not be accepted after the test.
October 2011 Biology 1001A Page 1 of 13
Student Number __________________________ Code 111 Code 111 Code 111
Circle the best single letter choice for each of the following questions before transferring
your answers to your computer sheet. Note: Questions may have 3, 4 or 5 choices.
1. Eukaryotic cells are, on average, considerably larger than prokaryotic cells. Why might this be?
A. Eukaryotic cells need to be larger because their membrane-bound nucleus is larger than the
nucleoid region of prokaryotes.
B. Eukaryotic cells need to be larger because they are usually part of multi-cellular organisms.
C. Eukaryotic cells can be larger since they can generate energy from several internal
mitochondria.
D. Eukaryotic cells can be larger since they have desaturase enzymes that can maintain
fluidity in large amounts of membrane.
2. Mayonnaise can be made at home by adding a stream of olive oil into some vinegar in a
blender. The blender creates tiny droplets of oil suspended in the water. If you then blend in
an egg, amphiphilic phospholipids in the yolk will stabilize the oil droplets and prevent the oil
from separating from the water.
What would you predict this would all look like at the molecular level?
A. The phospholipids would form a double membrane around each oil droplet.
B. The phospholipids would have their hydrophobic tails in the oil droplets and their hydrophilic
heads in the surrounding water.
C. The oil droplets would line up in a membrane with the phospholipids holding them together.
D. The phospholipids would form spheres around the water molecules, keeping them away
from the oil.
3. Cells that make large amounts of insulin (a protein hormone) for export have correspondingly
large amounts of rough endoplasmic reticulum (ER).
What makes endoplasmic reticulum “rough”?
A. ER is “rough” if it has many associated vesicles to transport proteins to the cell surface.
B. ER is “rough” if it has many associated intermediate filaments that help it to maintain its
shape while proteins move through it on their way to the cell surface.
C. ER is “rough” if it has many associated plasmodesmata that provide easy export channels
through the cell membrane.
D. ER is “rough” if it has many associated ribosomes to translate proteins destined for export.
4. Imagine your friend discovers a new unicellular organism that has a DNA genome and
ribosomes but no other cytoplasmic organelles.
Which Domain of life would this new organism belong to?
A. Archaea
B. Bacteria
C. Eukarya
D. A or B is possible.

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Description
UNIVERSITY OF WESTERN ONTARIO B I O L O G Y1001AOctober 292011Time 2 Hours Student NoTest RoomRow INSTRUCTIONSFOLLOW THE CHECK LIST On your Scantron sheet Fill the bubbles completelyPrint clearly Print nameUse HB pencil onlyDo your best SignatureNo stray marks or doodlesHaffie MacDougallShackleton InstructorMake all erasures completeBio 1001A Course Print clearly Bubble neatlyYesCalculators are permitted Student number nonprogrammable onlyExam Code 111Very important Leave it blank Section NoBorrowing is not allowedLeave it blank Answer SheetOn your Test Book Do not write your name on the coverNo names please Student number Your Scantron answers will be emailed to The room youre in right now Test Room your UWO email account within a weekWe will tell you this Row number Review copies of this test will posted on WebCT for study purposes Indicate your answers in the test book Leave no questions blank 4 Indicate your answers in both the test paper and on the 1 Please place your ID prominently on your desk and sign the Scantron attendance sheet when it comes to you 5 It is your responsibility to transfer all answers from the test 2 There are 48 questions in this testCheck your paper book to the Scantron sheet within the 2 hour test period carefully 6 When finished please stay seated and raise your hand3 There is only one fully correct answer for each questionWe will collect both your test book and your Scantron Part marks may be awarded Answer all questions We do sheetTest books will be returned to you in tutorial not subtract wrong from right Warning The Scantron marking program has a cheating analysis feature that compares answer patterns for all papers It alerts us to similaritiesWe then check seating arrangementsDo not sit near your study partners or write the same test codesKeep your work directly in front of you Please help us avoid any and all misunderstandings during these testsChallenges Please defend your arguments on this page onlyComments will not be accepted after the test
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