|
SCI 135 -
Third Exam Fall 2013
Links in each number
connect to the pertinent sections 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. Position effect can change how
_______ a. Cells reproduce
b. Cells relate to each other in multicelled
systems
c. Genes get expressed
d. Materials get moved through a cell membrane
e. Easily your foot goes to sleep
2.
In the fluid mosaic model, the phospholipid molecules
are
_______
a. Held tightly to each other b. Freely floating in 2
layers
c. Held in place by proteins d.
Only a small part of the membrane
e. The things that are by the things when the
things are there
3. A cell that specializes in absorbing materials most
likely has
_______ a. Cilia b. Golgi
bodies c. Ribosomes
d. Microvilli e.
Issues with self-image
4.
Mitochondria are found in
_______ a. Plants but not animals
b. Animals but not plants
c. Both plants and animals
d. Neither plants nor animals
e. Books that only insane
people read
5.
Water moves from soil, where the water is close to pure, to the cells
of
a plant’s roots. This movement
is
_______ a. Performed by the lining cells of the root
b. Passive transport
c. Active transport
d. Only done if nutrients are carried in the
water.
e. Not particularly interesting
6.
Which is an example of apoptosis?
a. A hand forms as a paddle; cells between
the bones die to separate
the fingers
b. Some materials have to be helped to move
through a membrane,
even if they are going in the
“right” direction
_______ c. After digestion, leftover materials are ejected
from the cell
d. Many places in DNA code for small
functional RNA molecules
e. Somebody drops a really heavy rock on their
bare foot
7. Which can change almost the
whole sequence of a coded protein?
_______ a. Radiation b.
Substitution c. Translocation
d. Deletion
e. Scrambling with a whisk
8. Which starts with diploid cells and ends
with haploid cells?
_______ a. Meiosis b. Transcription
c. Mitosis
d.
Translation e. Is that even legal?
9. A nucleolus would contain a lot of
_______ a. Membrane b. DNA
c. RNA
d. Carbohydrates e. Cell
slimey stuff
10.
Sectioning needs to be done to
_______ a. Prepare tissues for the microscope
b. Figure out where genes are on a chromosome
c. Position chromosomes for a cell division
d. Subdivide eukaryote cells for different
functions
e. Keep the drunks away from the nice
customers at games
11. Recessive traits show up with which
allele combination?
_______ a. Three recessives and a dominant
b. Four recessives only
c. One dominant and one recessive
d. Two recessives only
e. Time for rock, paper,
scissors, shotgun…
12. Materials are
broken down for recycling in the
_______ a. Pseudopod b.
Peroxisome c. Golgi bodies
d. Nucleus e. Recyclothingy
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.
What are two components of the
cytoskeleton? |
|
|
|
2. Give
the terms that go with each definition - |
|
DIFFERENT GENES
FOUND ON THE SAME
CHROMOSOME |
TWO CHROMOSOMES
CARRYING THE SAME
TYPES OF GENES |
|
3.
Give two different things that parts of our noncoding DNA
might be - |
|
|
|
4. Give
the basic structural difference between - |
|
SMOOTH ENDOPLASMIC RETICULUM |
ROUGH ENDOPLASMIC RETICULUM |
| |
|
|
5. What is the function of
histones?
|
|
4.
It’s called a
nuclear envelope, not a nuclear membrane. Give one feature about it
that makes it different from a “regular” membrane (other than it
being around the nucleus).
|
|
7. The two different
medical research areas that are very interested in
telomeres - |
|
|
|
8.
Give one
set of differences between - |
|
PROKARYOTE CHROMOSOME |
EUKARYOTE CHROMOSOME |
| |
|
|
9.
Explain why HIV escape mutants are so dangerous.
|
|
10a. What is a
Barr body?
|
10b. Why do
Barr bodies exist?
|
|
11. Give two pieces of
evidence that supports the
endosymbiont theory. |
|
|
|
12. For
a low chromosome number (compared to a high chromosome number) - |
|
ADVANTAGE – |
DISADVANTAGE - |
|
13. Briefly give the most
common explanation for
why cells seem to have a
maximum size limit.
|
|
14.
What are two Kingdoms of Life where all of the cells have cell
walls? |
|
|
|
15. Give the names of
two different types of
vacuoles - |
|
|
|
16. Explain how a
prion can cause the malfunction of an
entire cell.
|
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. Give
three sets of differences (other than the associated genders)
between - |
|
EGG CELLS |
SPERM |
| |
|
| |
|
| |
|
|
2. Give
three sets of differences between - |
|
FLAGELLA |
CILIA |
| |
|
| |
|
| |
|
|
3.
Give four rules from
the Cell
Theory. |
|
|
|
|
|
|
4.
Give the terms for each of
the two groups in each
microscope category - |
|
HOW THE BEAM INTERACTS WITH THE
SPECIMEN |
NATURE OF THE IMAGING BEAM |
| |
|
| |
|
|
5.
What are
three different ways that fresh-water organisms deal with
osmosis? |
|
|
|
|
6. Using this DNA
code give the messenger RNA sequence and, using
this chart, give the
coded amino acid sequence. |
|
Starting_____________________________________________________________________________________
Strand T A C C C A T
G G T A C C G A T G A A A A G C G A T T
mRNA
_____________________________________________________________________________________
Amino
Acids
|
|
7. Give four different
functions for some of the
proteins found embedded
in cell membranes. |
|
|
|
|
|
Link to Answer Key
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.
The resolution on light microscope hits a limit at about 1200X
magnification. Why can’t it be better than that? Three Points.
Why do some specimens need to be
coated with gold or platinum? Three Points.
What common word applies to
almost all prokaryotes (but not eukaryotes)? Three Points.
For two points each, give up to
three different materials that can easily pass through a typical cell
membrane. Three Points.
When a cancer becomes
malignant, it turns on genes for what particular ability? Three
Points.
Cancers
may begin when several different control systems malfunction. For Two
Points each, what systems might those be?
Mendel,
the genetics monk, believed that he was not really successful as a scientist.
Why? Three Points.
What particular feature is
often true of proteins from recessive alleles? Three Points.
What does the term “gender” mean,
biologically? Three Points.
|