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SCI 135 - Second Exam Fall 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.
The
two ends of an
antibody molecule _______
a. Attach to antigens and
pull them apart
b.
Attach to antigens to pack them together
c.
Attach to antigens and signal the immune system
d. Act
as poisons on the antigen carriers
e. Probably
do something involving antigens
2.
Fiber in the diet is a
stool softener because water
molecules stick to the
fiber molecules.
This property of water is called _______
a. Adhesion
b. Covalency
c. Cohesion
d. Hydration
e. Kind of yucky
3.
Two
isotopes of the
same element will have different _______
a. Charges
b. Electron shells
c.
Ions
d.
Weights (masses)
e.
Personalities – and one of them will be
mean
_______
a. Protein
b. Small carbohydrate
c. Lipid
d. Large carbohydrate
e.
Killer word in Scrabble – if the trays were bigger…
5.
Your
muscle cells take in amino acids
and make proteins,
using which
process? _______
a. Amination
b. Dehydration synthesis
c. Hydrolysis
d. Nucleation
e. That
one I can’t remember
6.
In the lab, the albumin
was egg albumin (a protein), mixed with water.
The albumin was the ________
and the water was the ________. _______
a. Dissolvee…dissolver
b. Solute…solution
c.
Solute…solvent
d. Dissolver…solution
e. Gooey stuff…runny stuff
7. A
gene sequence would be _______
the length of the protein sequence. _______
a. Half
b. Twice
c. Three times
d. Equal to
e. Sequential to
8.
Many lipid properties
exist because the molecules are _______
a. Polar
b. Hydrophobic
c. Hydrophilic
d. Nitrogenated
e. Unusually annoying _______
a. Lipid and sugar
b. Amino acid and
nucleotide
c. Protein and nucleic acid
d. Protein and lipid
e.
Wait, I know this one, I
think…maybe… _______
a. Muscle protein
b. Structure protein
c. DNA processor
d. Hormone
e. How would I know what your
osin is?
11.
If an atom has picked up an
electron, it has been _______
a. Redacted
b. Oxidized
c. Reduced
d. Electrocharged
e. Gotten the electron’s
daddy mad
12.
Glycerol is a basic
component of _______
a. Amino acids
b. Nucleotides
c. Starches
d. Lipids
e. Um,
something bigger than glycerol SHORT ANSWER.
Answer any eight of the following questions for 4 Points Each.
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.
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. In
classification, where do the
domains fit?
Three Points. Mendeleev, the
periodic table guy – what
sacrifice did his mother make for him?
Three Points. What system
requires free radicals to
work properly? Three Points. Why is there so much
nitrogen in the
atmosphere?
Three Points. What parts of
food molecules are broken by
stomach acid?
Three Points.
Why does
turning over make a lake
healthier?
Three Points.
Pesticide
molecules are often similar to sex
hormones, but they are not meant to have similar effects.
So why
are they similar?
Three Points. The sequence of
actin is very similar across
widely-separated organisms.
Why? Three Points. The molecules released by
ants under attack produce
two different responses based
upon their concentration – for Three Points Each, what are those responses?
What kind of molecule is the
sweetener Splenda?
Three Points.
What, generally, is the
family history of people who are
not lactose-intolerant?
Three Points.
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