BI 171 - Third Exam - 2001
NOTE - the numbers link to related information in the book. Not all information on old exams is in the new book (so some numbers have no link), and if something looks unfamiliar, you can check to see if it's from a chapter you're supposed to be studying for your current exam.
Multiple Choice.
Place the letter of the choice that best answers the question on the line to the left.
Two Points Each. NOTE: "e" answers are never the correct answer.
_______ 1. Which are parts of a chloroplast?
a. Grana & stroma
b. Glycerol & permease
c. Mitochondria & endoplasmic reticulum
d. Fluid & mosaic
e. The top part and the right side
_______ 2. The most common autotrophs are
a. Plants b. Animals c. Fungi d. Viruses
e. Those that use regular unleaded gasoline
_______ 3.
Some hormones attach to receptors well inside their target cell.
Those hormones are
a. Isoosmotic
b. Being actively transported
c. Lipid-soluble
d. Used in respiration
e. Always on the doorman's list
_______ 4. Respiration in most eukaryotes follows this pattern:
a. All stages in cytoplasm
b. All stages in mitochondria
c. First stage in mitochondria, second stage in cytoplasm
d. First stage in cytoplasm, second stage in mitochondria
e. In with the good air, out with the bad air...
_______ 5. A molecule which gives up Hydrogen atoms would be
a. Reducing
b. Oxidizing
c. Desaturating
d. Reaching equilibrium
e. Thought of as generous only by very strange people
_______ 6.
Which factors affect the fluidity of the molecules of a cell membrane?
a. Attachment to the cell wall
b. Association with the nuclear envelope
c. Phospholipid "heads" and cholesterol
d. Phospholipid "tails" and cholesterol
e. How much they've had to drink and their last bathroom break
_______ 7.
Group translocation involves
a. Enzymes
b. Krebs Cycle
c. Food webs
d. Light interaction
e. Changing cliques in high school
_______ 8. Which are primary "players" in electron transport chains?
a. ATP & ADP
b. ATP & GTP
c. NADH & FADH2
d. Glucose & oxygen
e. I'll wait for the CD to come out...
_______9. A system that can exchange energy but not matter beyond its boundaries is
a. Closed
b. Open
c. Isolated
d. Insulated
e. Never going to get a decent date
_______ 10.
In the lab exercise, the heavy salt solution was ________ to the cell's contents
a. Isotonic
b. Hypotonic
c. Hypertonic
d. Megatonic
e. Tasty
_______ 11. A final product of protein metabolism is
a. Sugar
b. Ammonia
c. Nitrate
d. Sulfate
e. Increased self-esteem
_______12. The environments of chemoautotrophs usually have what feature in common?
a. Excessive sunlight
b. High temperature
c. No carbon dioxide
d. Low temperature
e. No major fat-food restaurants
_______ 13. The First Law of Thermodynamics involves
a. Conservation of energy only
b. Conservation of matter only
c. Conservation of energy and matter
d. Entropy
e. Nothing you would ever need to have your right read about
_______14. Freeze fracture techniques have been used to analyze
a. Membrane structure b. Respiration pathways
c. Photosynthesis d. Radiation effects
e. Ice-maker performance
_______ 15.
Which is more likely to have double bonds in the molecules?
a. Petroleum
b. Corn oil
c. Pork fat
d. All of these
e. There's really an answer to this?
_______ 16. Which is true in the comparison of aerobic versus anaerobic respiration?
a. Only aerobic can produce carbon dioxide
b. Only anaerobic requires a final hydrogen acceptor
c. Aerobic is much more efficient
d. All of these are true
e. How come there's never the answer I'm looking for?
_______ 17.
As ammonia is produced by a cell's metabolism, it leaves the cell into the
surrounding fluids, where it gets carried away from the cell. This process is
a. Osmosis
b. Active Transport
c. Diffusion
d. A combination of all of these
e. A whole bunch of stuff in the not-making-sense realm
_______ 18. The "entry point" of the Krebs Cycle involves
a. A 2-Carbon molecule added to a 3-Carbon molecule
b. A 3-Carbon molecule added to a 3-Carbon molecule
c. A 2-Carbon molecule added to a 6-Carbon molecule
d. A 2-Carbon molecule added to a 4-Carbon molecule
e. Pick a number, any number...
Short Answer.
Pick NINE questions to answer in the spaces provided.
NOTE: if you answer MORE than nine, only the first nine will be corrected.
Four Points each. Partial credit is possible.
1. What are two adaptations that organisms use to resist osmotic pressure in a fresh-water environment?
|
|
| 2. How exactly is the oxygen used in aerobic respiration? What does it do in the process?
|
| 3.
Explain how an exergonic reaction occurs in terms of activation energy.
|
4. What are the four fundamental energy generators in the universe?
|
|
|
|
|
5. What are two possible "waste" products from respiration in anaerobic organisms?
|
|
6. What are the two basic types of coupled reactions?
|
|
| 7. Stronger, harder-to-break chemical bonds actually contain less energy than those that are
weaker and easier to break. Briefly explain why.
|
8. What sorts of products, other than CO2 and H2O, can come out of anaerobic respiration?
|
|
9. Membrane channels can restrict permeability based on which particle features?
|
|
10. What are two processes that commonly require phosphorylation to occur?
|
|
| 11. Transmembrane carriers do not "flip over" to do their work - they can't. Why not?
|
| 12. How is a molecule's oxidation state calculated?
|
13. Lipid molecules are made up of what two basic components?
|
|
14. Give examples of specific (species) organisms that fit "exclusively" into each group -
| Producer: | Primary
Consumer: |
| Secondary
Consumer: |
Decomposer: |
| 15. How is a partition coefficient determined? What sort of test is used, and how?
|
Long Answer.
Select and answer completely any four of the following questions.
Note: if you answer more than four, only the first four will be corrected.
Seven Points Each. Partial credit is possible.
1. What are four different types of uses for lipids in organisms?
|
|
|
|
|
2. At the points labeled with the stars, attach the appropriate labels from this list:
Violet. X-Ray. InfraRed. Red. Blue. UltraViolet.
Short Wavelength \ <-------------Visible Range --------------> / Long Wavelength
* * * * * *
3. Briefly describe what happens during the first four steps of glycolysis, up to the actual "breaking" of the glucose molecule.
4. For the two parts of the photosynthesis process:
| Name | Uses - | Produces - |
|
|
||
|
|
5. For a either of the main oxidizing agents:
| Name (abbreviation okay): |
| Basic oxidation reaction: |
| Nutrient source: |
6. Name and briefly define the three types of potentials that can be set up in biological systems.
7. Give four starting conditions that will "push" a flux more quickly toward equilibrium.
|
|
|
|
|
LINK TO ANSWER
KEY FOR THIS EXAM
BONUS QUESTIONS.
Answer as many or as few as you wish. You can't lose points on the rest of the exam by getting these wrong. Partial credit is possible.
Explain the fundamental importance of the concept of E = mc2. Four Points.
Why are they called anabolic steroids? Three Points
How do living systems seem to "get away" with breaking the 2nd Law of Thermodynamics? Four
Points.
The nutrient sources of both NAD and FAD are in what class of vitamins? Three Points.
There are two features of the bony fish that indicate that the group did most of their evolving in fresh water? Four Points Each.
The addition of phosphate groups to base
molecules during glycolysis leads into most
crucial steps. What is the added phosphate
doing, exactly, that sets up these steps? Four
Points.
For Two Points Each, up to 4 examples, what are examples of commercial products that rely on anaerobic organisms for their production?
Copyright 2001, Michael McDarby.