SCI 135 - Fourth Exam Spring 2013
Links connect to relevant parts of the online book.
On the line to the left, place the letter of the choice that best answers the question.
Three Points Each. NOTE: "e" answers are never the correct answer.
1. Enzymes from the stomach stop working in the intestine because
_______ a. They aren’t needed there b. They get inhibited
c. There is no oxygen there d. The pH changes
e. Their contract does not allow the overtime
2. Which comes closest to being universally used in biological systems?
_______ a. Ammonia b. Oxygen c. ATP
d. Carbon dioxide e. Slimy stuff
3. Which ability was probably critical to the original development of photosynthesis?
_______ a. Light sensing b. Predation
c. Independent movement d. Aerobic respiration
e. The ability to hang around one place and not get really bored
4. The beginnings of eukaryotes is very much tied to
_______ a. The heterotroph hypothesis b. Colonialism
c. The endosymbiosis theory d. Photosynthesis
e. What would want to be tied to that?
5. Which term is specifically defined according
to a human ability?
_______ a. Enzyme b. Gene c. Respiration
d. Vitamin e.
6. The aerobic stage of respiration is approximately _______ times
more efficient than the anaerobic stage.
_______ a. 2 b. 200 c. 18 d. 75
e. Ooo, he warned us about this one…
7. Enzymes do their job by
_______ a. Transferring electrons
b. Lowering activation energy
c. Increasing acidity
d. All of the above
e. Just looking busy when the boss comes by
8. Your sweet receptors will react to a broad number of different
molecules. This is an example
_______ a. Low specificity b. Multiple binding sites
c. Different gene activation d. Inhibition
e. How we really like sweets
9. The Snowball Period probably most accelerated
the evolution of
_______ a. Single-celled eukaryotes b. Prokaryotes
c. Animals d. Plants e. Elves
10. Many ATPs are made in
_______ a. The Kreb Cycle b. The Calvin Cycle
c. Glycolysis d. The Electron Transport Chain
e. Of course, no one would name it “the ATP-makin’ step”
11. Which part of a lipid can be broken down in
_______ a. Fatty acids b. Amino acids
c. Nucleic acids d. Glycerol
e. The breathy parts
12. The “plant problem”
was associated with
_______ a. Hybridization events b. The first living things
c. Prepping proteins for analysis d. Mass extinctions
e. People who snort oregano
Answer any eight of the following questions for 4 Points Each.
Note: if you answer more than eight, only the first eight will be corrected.
can get partial credit on these answers.
Answer any four of the following questions for Eight Points Each.
Note: if you answer more than four, only the first four will be corrected.
You can get partial credit on these answers.
Answer as many as you are able. Wrong answers will not result in points being lost from the main exam. You can get partial credit on these answers.
When people say that Life violates the 2nd Law of Thermodynamics, what do they mean? Three Points.
Why does Life actually NOT violate that Law? Three Points.
Explain why traits produced by metabolic pathways would pretty much have to be multiple-gene traits. Three Points.
In the rate reaction graphs, one of them had two curves. Why? Three Points.
When a protein denatures, what’s happening inside the molecule? Three Points.
Where exactly do nitrogenous wastes come from? Three Points.
What evidence might support panspermia? Three Points Each.
With continental drift, sedimentary rocks might have formed and moved long distances to where they are now. What feature of the rocks can be used to determine the original latitude of the sediments when they formed? Three Points.
What do plants generally need done by fungi or bacteria? Three Points.
Why do some people think that Nemesis exists? Three Points.