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SCI 135 - Second Exam Spring 2014
MULTIPLE CHOICE.
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. A
plasmid is _______
a. The surface of interacting
water droplets
b.
The lipid part of a cell membrane
c.
A type of catalyst
d. A
supplement to a prokaryote’s DNA
e. A
weird blob in your salad dressing
2.
Ionic bonds
are not major “players” in biological
systems because of
_______
a. Their weakness
b. Their strength
c.
Hydration shells
d.
The components’ uselessness
e.
The way the other bonds make fun of them
_______
a. Amino acids
b. Muscle proteins
c.
Antibody types
d. Enzymes
e. Daft Punk
4.
How
clear a system can focus is a
measure of its _______
a. Magnification limit
b. Clarity
c. Projection
d. Resolution
e.
Sobriety
5.
Hydrolysis
is a critical reaction in
_______
a. Digestion
b. Enzyme function
c.
Solution formation
d.
Freezing
e. Something I’m supposed to
remember – unless it’s a trick!
a.
To make certain genes easier to find
b.
By enzymes to substrates _______
c. To make something more
transparent
d. Lipid barriers
e. To
keep the cool folk separate from the morlocks
7.
The
process of photosynthesis
builds _______
a. Lipids
b. Carbohydrates
c.
Proteins
d. DNA
e. Um, plants?
8.
A material that prevents
oxidation would _______
a. Keep electrons from being
taken
b. Keep electrons from being
given up
c.
Keep oxygen from combining with atoms
d. Keep
oxygen from being released from molecules
e. Keep oxygen atoms off of
eHarmony
9.
In
a base, the
predominant ion is
_______
a. Na+
b.
H+
c. Cl-
d. OH-
e.
Whichever one can beat the other ones up _______
a. Enzyme
b. Oil
c. Carbohydrate
d. Receptor
e. Cheap gloss
11. Which can be
hormones? _______
a. Carbohydrates & proteins
b. Carbohydrates & lipids
c.
Lipids & proteins
d. Carbohydrates & nucleic acids
e. Well,
that there’s some crazy juice…
12. Water
has its greatest density at
_______
a. 0oC
b. 100oC
c.
4oC
d. -100oC
e. Can’t it just be
good, does it have to be the
greatest? SHORT ANSWER.
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.
You can get partial credit on these
answers.
Starting
________________________________________________________________ Strand
G
T A
A T
G A
C C
T A
T C
T C
A A
T T
G C
________________________________________________________________________________
Messenger
RNA from 1st strand 9.
Why is it very
useful for some
toxins to be
lipid-soluble?
10. What is meant by the term
chemical pathway?
SOLUTE?
12. Briefly explains what happens in a
double bond.
13b.
Why is that radical
(or radicals in general) particularly
reactive?
15. What
produces polarity in a
molecule?
LONG ANSWER.
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.
O O
O
O
O O
O
O
O O
O
O
O O
BONUS QUESTIONS.
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. Why is it really important that
local lakes “turn over”? Three
Points. What is the main function of
stomach acid in the digestive
process? Three Points.
Fiber “uses” what
property of water to relieve
constipation? Three Points. Why did the sugars in the
Benedict’s test not react until they
had been
heated?
Three Points. Why would plants produce
starches that are relatively
easy to break down? Three
Points. What does
waxy leaves indicate about a plant’s
natural environment?
Three Points. How do
prions cause cells to
malfunction?
Three Points. What molecule type has, in just
the last decade, been found to have many many new cellular functions?
Three Points. What do
dissecting microscopes have that
makes them more useful for doing dissections than the “regular” microscopes?
Three Points.
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