BI 171 - Fourth Exam -
NOTE - the numbers
link to related information in the book. Not all information on old exams
is in the new book (so some numbers have no link), and if something looks
unfamiliar, you can check to see if it's from a chapter you're supposed to be
studying for your current exam.
Place the letter of the choice that
best answers the question on the line to the left.
Two Points Each. NOTE: "e" answers are never the correct
_______ 1. A common
reporter gene codes
b. Antibiotic resistance
d. Culture shape
e. Bad spelling and grammar
2. Intermediate filaments are
most commonly found in cells that
b. Are preparing for cytokinesis
d. Are under mechanical stress
e. That canít make up their minds
_______ 3. An acrosome features
e. The "too much information" concept
Which best describes 4. histones?
a. Microtubule Organizing
b. Spools for winding up DNA
d. Electrophoresis gels
e. Deeper than hertones
_______5. The chance of an
and an O parent having an A child is
a. 0% b.
e. Donít I need a calculator (or a mathematician) for this?
_______ 6. Which is the proper transduction
a. Protein kinase, 2
nd messenger, G protein, enzyme
b. Enzyme, 2
nd Messenger, G protein, protein kinase
c. G protein, 2
nd Messenger, protein kinase, enzyme
d. Enzyme, 2
nd messenger, protein kinase, G protein
e. How can I pick an order if none of the steps look familiar?
7. Muscles depend on the
e. Something in spinach
In 8. prokaryotes, would be found active
a. In contact with
b. On endoplasmic reticulum
c. On the inner cell membrane surface d.
Any of these places
e. Drunk and disorderly on any Saturday night
Which pair are most closely related? 9.
a. rRNA -
b. Spindle - telomere
c. Kinetochore - centromere
d. Basal body - coated vesicle
e. Biology class - insanity
10. In eukaryotes, genes
for pathway proteins are commonly
c. On the sex
d. Placed in sequence
e. Blacktopped over
11. Promoters and enhancers
are generally attached to
d. Nuclear envelopes e. Advertising agencies
_______12. In prokaryotes, a protein
needed continuously or regularly is called a
c. Pathway protein
e. Minimum-wage slave
Under ideal conditions, 13. mitochondrial
diploid b. Inherits along
maternal lines c. Does not
d. Is only
e. Feels superior to all the other NAs
_______14. Red-green color blindness is a
trait. When a boy is color blind, he
inherited the allele(s) from
c. Either parent
e. Great Grandad, the crazy one
_______ 15. The eventual fates of embryonic
cells are determined very early in
d. Spiral cleavage e. Any Steven Seagal movie
_______16. A karyotype is
a. Determined by Southern Blotting
b. Particular to a species
c. Particular to an individual
d. A product of two different genes
e. Some sort of old-fashioned printer
_______17. Steroid hormones, unlike
other messenger molecules, can
a. Attach directly to chromosomes
b. Set off multiple receptors
c. Access multiple transduction pathways
d. Be deactivated with carbohydrates
e. Make you act like an idiot
_______18. To do Southern blotting, it
is necessary to have
a. Plasmids do part of the work
b. An equal mix of male cells and female cells
c. Cells that make a lot of the target protein
d. All of these
e. Many bottles of Kentucky-made fermented beverage
Pick NINE questions to answer in the spaces
NOTE : if you answer MORE than nine, only the will be corrected. first
Four Points each. Partial credit is possible.
1. What are two for
different applications gene transfer in crop plants?
What are two uses for different microtubules
3. Chromosome numbers (low or high) in organisms
are a balance between what two advantageous features?
What are two done by, for example, an epithelial cell during entirely different types of
Briefly 5. ( explain donít just
define!) How position effect works.
Briefly explain the purpose of Okazaki
7. Briefly explain a why base insertion
is a much more powerful mutation than a substitution.
8. Give two general advantages that can be gotten
from metamorphosis between life-cycle stages.
9. Briefly the two ways that describe polyspermy
What is an 10. exon?
What are two that
benefit from life-style types alternation of generations?
Give an of a example trait that
is passed on epigenetically.
13. Transfer RNA (tRNA) binds to what two
14. What does the signal region of a protein do?
15. What are two molecular-level ways that inducers
Select and answer completely any four
of the following questions.
Note: if you answer more than four, only the
first four will be corrected.
Seven Points Each. Partial credit is possible.
Give, in order of occurrence, the phases of mitosis,
and for each, tell one distinct thing that happens particularly during
2. Explain, step-by-step (donít be constrained by the
number of lines) the Polymerase Chain Reaction (PCR) process .
3. Here it is - determine the sequences of the named
molecules from this DNA sequence.
T A C A G
C C C C A
C A T T G
C A T G A
T A T T
4. Name the three embryonic germ layers, and for
each give one organ, structure, or system that forms from that layer.
5. In any organism with genders, give three
sets of differences there would be between:
6. Whatever you choose from the history of
discoveries about genetics, make sure that your list of three
discoveries is in chronological order
Researcher or Research Organism
three separate sets of differences
between mitosis and meiosis.
to Answer Key
Answer as many or as few as you wish. You
can't lose points on the rest of the exam by getting these wrong. Partial credit
How are eukaryotic and prokaryotic different? Two Points each. flagella
What is the evolutionary implication of
being a very similar molecule no matter where itís found? Three Points. actin
Whatís the relationship between vestigial
structures and junk DNA? Three Points.
What lucrative research fields are vigorously
investigating telomeres? Two Points each. What is each investigation
trying to find out? Three Points each.
Potentially, what bad thing could result from
being given (Two Points) unnecessary antibiotics , and
briefly how could that come about? (Three Points)
What is indicated by "puffs"
in insect chromosomes? Three Points.
What sorts of organisms were being
studied by the inventor of the Polymerase Chain
Reaction? Three Points.
What assumption about stem cell use
will probably turn out to be true? Three Points. not
What non-spherical shape are blastulas commonly
(Two Points), and why? (Three Points)
CODONS ON MESSENGER RNA
GENE TRANSLATION TABLE