SCI 135 - Third Exam Spring 2014
Links connect to relevant parts of the online book.
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.
Chaperonins
and prions are both involved in
_______
a. Transcription
b. Translation
c.
DNA repair
d. Protein folding
e. Making
all of these terms confusing
2.
When a freshwater plant moves
phosphate from the low-concentration
area of the pond into the higher-concentration
area of the
cytoplasm, that is
_______
a. Synthesis
b. Exocytosis
c.
Active transport
d. Passive transport
e. Probably going to get
someone in trouble
3.
Apoptosis
would result in a cell being
_______
a. Mobile with pseudopods
b. Differentiated
c. Dead d. Prepped for division
e.
A new Daddy?
4.
Which would be a part of every
chromosome?
_______
a. Ribosomes
b. Nucleolus
c. Microfilaments
d. Histones
e.
Well,”chromo” is definitely in there…
5.
During
which stage(s) of the cell cycle
would cytokinesis definitely
not happen?
_______
a. Interphase only
b. Prophase and metaphase
c. Metaphase and anaphase
d. Anaphase and telophase
e. Well, you can’t do it
when someone is
looking…
6.
When dominant-recessive hybrids are
crossed
a.
Offspring may show the recessive trait
b.
Offspring only show the dominant trait
_______
c. All offspring are hybrids
as well
d. All of the above
e. What
kind of weird stuff are we talking about here?
7.
Microvilli would aid a cell involved
in
_______
a. Mobility
b. Reproduction
c. Absorption
d. Disease resistance
e.
Shady business dealings
8.
What makes rough endoplasmic
reticulum “rough”?
_______
a. DNA
b.
Cell walls
c. Ribosomes
d. Microfilaments
e.
It grew up in a bad neighborhood
9. When
conditions change, there are often already mutations within a
population that give advantages to the new
conditions.
What explains how those mutations were just
“hanging
around” to be there when relevant?
_______
a. Cell cycle order
b. Hardy-Weinberg rule
c. Isolation types
d. Position effect
e. The Theory of Genetic Street
Corners
10.
Storage and processing of RNA
is done specifically in the
_______
a. Nucleolus
b. Golgi bodies
c.
Nuclear envelope
d. MTOC
e.
Back of a “service station” on 58th street
11.
Telomerase would be
least active cells under which
condition?
_______
a. Sex cell formation
b. Embryonic development
c. Cancer growth
d. Old age
e.
Is that what they sing in the background of “The Lion Sleeps Tonight”?
12. Nervous
systems develop from
_______
a. Mesoderm
b. Endoderm
c. Ectoderm
d.
Dendroderm
e. Dermaderm…aderm…aderm…
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.
1.
For high chromosome
numbers, compared to low
ones - |
|
ADVANTAGE?
|
DISADVANTAGE? |
2.
With modern knowledge, what is
actually being altered
over time when evolution acts on
a population?
|
3.
Why is it called a
nuclear envelope rather
than just a nuclear membrane? |
4.
What
two different
abilities do “successful”
HIV escape mutants have? |
|
5.
Briefly explain,
for the
fluid mosaic model of cell
membranes - |
|
Why
it’s
fluid - |
How
it’s a
mosaic
- |
6.
What two major but
totally different functions occur during
interphase? |
|
7.
Briefly explain how an individual winds up with
extra copies of a few genes.
|
8. What are two strong
pieces of evidence that support the
endosymbiosis theory? |
|
9.
Put these in the
order
that they happen:
fertilization, fusion, meiosis, mitosis. |
|||
1 |
2 |
3 |
4 |
10.
A human cell with a lot of
Golgi bodies would be
probably very involved in what
function for the body?
|
11.
Briefly
explain why an
addition point mutation can
be particularly dangerous. |
12.
What are two different
functions (not just terms) for
proteins embedded in cell
membranes? |
|
13.
What is the “pull
strength” rule for spindle
fibers?
|
14.
What is meant by genetic
linkage? |
15.
When
radiation cause
multiple DNA breaks, give
two different ways that the
damage can lead to cell death. |
|
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.
1.
Using this DNA code give the
messenger RNA sequence and,
using the
chart attached to the back of the exam, give the
coded
amino acid sequence. |
Starting_____________________________________________________________________________________ Strand
T A C C
G A
A G
G T
A G
C C
A T
G C
A C
A G
C G
A C
T mRNA
____________________________________________________________________________________ Amino
Acids |
2. What are three
sets of differences between
mitosis and
meiosis? |
|
MITOSIS |
MEIOSIS |
3.
Give three sets of
differences between - |
|
FLAGELLA |
CILIA |
4.
Name
or give a function (but
not both as 2 answers) performed by a
4 vesicles or vacuoles. |
|
5. Describe
(don’t
just give a term) four different types of
reproductive
isolation. |
|
6. Give three
sets
of differences (other than the associated genders)
between - |
|
EGG CELLS |
SPERM |
7.
What are three different ways that fresh-water organisms
deal with
osmosis? |
|
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.
What “cell abilities” do you NOT
want activated in cancer cells?
Three Points Each.
In the lab, what purpose was
served by the salt in the
salt solution?
Three Points.
Why
did Mendel grow
pea plants?
Three Points.
Why is it okay to call the
Y chromosome the “male” chromosome,
but
wrong to call the X chromosome
the “female” chromosome? Three
Points.
Viruses generally
don’t use the host cell’s DNA
proofreading chemistry. How is
this useful to the viruses?
Three Points.
Cancer treatment causes side
effects mostly because the treatments affect what type of cells
other than cancer cells?
Three Points.
What are the
causes of the
two types of mosaicism?
Three Points Each.
What is
probably true of organisms that have no
response to destructive polyspermy?
Three Points.
Why are some
types of isolation really difficult to
observe? Three Points.