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SCI 135 - Third Exam Spring 2015
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.
Crossing over happens during
_______ a. Sexual reproduction without genders
b. Mitosis c.
Meiosis I
d. Meiosis II
e. Many singers' later careers
2. Histones are a major part of
_______ a. Cell membranes
b. RNA production
c. Nuclear envelopes
d.
Chromosome structure
e. Where they always tell you to kick a guy who's threatening you
3. Central vacuoles are used to
_______ a. Process secretions
b. Support plants
c. Provide osmotic stability
d. Reinforce nuclei
e. Show where the middle is
4.
What part of
a population really changes during evolution?
_______ a. Gene pool
b. RNA types c. Organelles
d. Environment e. Where they order
their pizza
5.
Budding of
arms and legs in an embryo
would be controlled by
_______ a. Maternal hormones
b. Yolk enymes
c. Mesoderm factors
d. HOX genes
e. The latest X-Box
6.
Chaperonins and prions are involved in
_______ a. Spindle production
b. Protein folding
c. Processing of messenger and transfer RNA
d. DNA replication
e. Most really dull parties
7.
Which
features are found in all cells?
________ a. Cell walls and chromosomes
b. Cell membranes and cytoplasm
c. Cell membranes and cell wall
d. Chromosomes and nuclei
e. Driver's-side air bags and radio
8.
Worn-out
cells often go through what process?
_______ a. Apoptosis
b. Replication
c. Metastasis
d. Rejuvenation
e. Always complaining about their aches and pains
9.
A cell
involved in secretion should contain
________ a. Chromosomes
b. Ribosomes
c. Golgi bodies
d. All of these
e. Oh, no! Not another one of these questions!!!
10.
Position effects are associated with
_______ a. Early embryo layout
b. How easily genes can be expressed
c. Where new genes come from
d. Where codons start working
e. Those aches you get in the morning
11. An
allele is a
________ a. A type of membrane attachment
b. Molecule used for energy storage
c. The dissolved material in a solution
d. Variation in the code of a gene
e. The newest flavor of alcoholic Snapple
12. Transfer RNA (tRNA) does its work
_______ a. In a ribosome
b. In the nucleus
c. In the nucleolus
d. In the phospholipid bilayer
e. At the bus station
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.
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1. Fresh-water fish use
two different strategies to prevent
osmotic damage - what are they? |
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2. What two different structures do
spindles attach to? |
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3. Name
two structures that make up the cytoskeleton. |
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4.
What are the two features that can make
HIV escape
mutants really dangerous? |
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5. What are the two different general cell functions that
happen during interphase? |
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6. Briefly explain why
addition or deletion point mutations
are potentially worse than substitution point mutations.
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7.
Give a basic function for each - |
PEROXISOME -
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LYSOSOME -
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type of structure are these? |
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9.
For a low chromosome number, compared to a
high
chromosome number - |
BASIC
ADVANTAGE?
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BASIC
DISADVANTAGE?
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10. What are
two stages of the cell cycle when
cell division
should
not
happen? |
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11. What is hybrid vigor? |
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12.
Researchers into telomerase mechanisms in
aging - |
Hope to get
what, particularly,
to happen? |
May get what
predictable
side-effect? |
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13. What are two different ways that
radiation exposure can
bring about cell deaths? |
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14. What are two Kingdoms where
all species have cell
walls? |
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15. What was the "clinching" piece of
evidence for the
endosymbiont theory?
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16. Give a
basic set of differences between the chromosomes
of - |
PROKARYOTES
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EUKARYOTES
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17. If all you know is
what is moving where, what specific
detail will tell you if it's moving by active transport?
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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.
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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 C A
A A G T A G G C A
T C C A T A G G G
A C T
mRNA
________________________________________________________________________________________
Amino
Acids |
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2. Give three sets of differences (other than the
associated genders) between - |
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EGG CELLS |
SPERM |
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3. Give three sets of differences between - |
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FLAGELLA |
CILIA |
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4.
Give four rules from the
Cell Theory. |
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5.
What are four different types of proteins found in
cell
membranes? |
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6.
For the four phases of mitosis
(so not the one between), name
the phases in order and give one specific thing
for each that happens particularly in that phase. |
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7. Give the names and
basic functions of three molecular-complex
organelles. |
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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.
How is apoptosis "supposed" to be
pronounced? Three Points.
The surface-volume explanation for cell
size limits only really applies to what cells? Three Points.
Cancers "turn on" genes / abilities that
allow them to thrive and spread. For Two Points Each, give such specific
abilities.
The endosymbiont theory was strongly
resisted because it was new and odd, but what was the non-science likely
reason for the resistance? Three Points.
What was the actual purpose of the
salt in the diffusion lab salt solution? Three Points.
What is the counter-force to root
pressure? Three Points.
For Mendel - why
did he use pea plants? Three Points.
What is the most common feature that makes
an allele recessive? This has nothing to do with the dominants.
Three Points.
Why must all of the enzymes and other
chemicals for mitosis be all made before the process begins?
There are a couple of possible answers for this.
Why would it be bad if more of a sperm beyond its
nucleus got into the egg cell? Three Points.
The timing of meiosis in egg cell
production varies widely in animal groups. Why do the
stages get delayed? Three Points.
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