BIO 171 - Third Exam - 2013
Each question's number is linked to the relevant part of the online book, if possible (some questions relate to multiple sections).
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 answer.
1. Parasites often use alternation of
a. It aids in their dispersal b. It increases overall numbers
c. There is a doubling of advantages d. They are non-mobile
e. They have short attention spans and forget what they
2. Okazaki fragments appear during
a. Transduction b. Transcription c. Translation
Replication e. Japanese explosions
_______ 3. Gametophytes in early land forms depended on what conditions to perform
their primary function?
a. Free water b. Soil nutrients c. Wind
d. Animal partners e. A little
mood music was helpful…
4. A dominant allele is, compared to a
a. Usually more advantageous b. More likely to show up
c. Usually significantly different d. More likely to be passed on
e. Unlikely to be reported for abuse
5. Which would not produce identical
twins from split embryos?
a. Blastula b. Deuterostomes
c. Gastrula d. Protostomes
e. The Anti-Cloning League
6. Which should probably come from
a. Right-left distinctions and mouth placement
b. Brain placement and memory function
c. Genital development and puberty initiation
d. All of the above
e. Why are there genes that sound like a hairball
being coughed up?
7. Adhesion and cohesion are major
a. Muscle tissue b. Vascular tissue
c. Ground tissue d. Connective tissue
e. I’m figuring maybe some kind of tissue…
Flagella and cilia
a. Are membrane all the way through
b. May have added-on structures
c. Are held down by intermediate filaments
d. Have microtubules in them
e. Would make bad Ben and Jerry’s flavors
9. Metamorphosis commonly results in
a. Different reproductive strategies b. Increased carrying capacity
c. A completely new set of genes d. Alternation of generations
e. Big surprises at class reunions
10. Which is a negative
a. Water and soil chemicals mixing in a waterfall
b. Water and nutrients entering a root
c. Rabbits running from a dog they smell
d. A male moth finding a female through tracking her pheromones
e. Is it just April, or are taxes mentioned in everything?
11. An acrosome is
a. An acidic vacuole b. A haploid nucleus
c. A special mitochondrion d. A vesicle full of enzymes
e. Something they sell to treat acne
12. Membrane molecules commonly used as
a. Glycocalex b. G proteins
c. Ligands d. Cyclic AMP
e. Proteins that look like little yellow flags
13. Which is associated with a
a. Bottleneck effect b. Niche recovery
c. Population rebound d. Founder effect
e. Wrong place, wrong time, bye-bye
a. Prophase and anaphase b. Prophase and metaphase
c. Prophase and telophase d. Interphase and metaphase
e. Times when genes get very redundant
Evo-devo is becoming closely associated with
a. Linkage b. Epigenetics c. Genome studies
d. Mutation studies e. Science - schmience
16. Which organisms would most likely have the
fewest cell-division errors?
a. Sexual, with low chromosome number
b. Sexual, with high chromosome number
c. Asexual, with low chromosome number
d. Asexual, with high chromosome number
e. Can’t we just dock their pay if they screw up?
_______ 17. You have a membrane that is permeable to water and sodium, but not to
magnesium. On one side, an aqueous solution of 10% sodium;
on the other, an aqueous solution of 5% sodium, 10% magnesium.
What should happen?
a. Diffusion and osmosis in the same direction
b. Diffusion one way, osmosis the other
c. No net movement
d. Only diffusion, no osmosis
e. Skull becomes permeable to brain matter; it dribbles out
18. Histones are
a. Active during early embryo development
b. Critical when a seed germinates
c. A major part of chromosome structure
d. A common 2nd messenger molecule
e. What you say when you meet Mick Jagger and the guys
Pick NINE questions to answer in the spaces provided.
NOTE: if you answer MORE than nine, only the first nine will be corrected.
Four Points each. Partial credit is possible.
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.
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 is possible.
How exactly does a pseudopod generate attractive force to the surface it’s crawling on? Three Points.
Why do microvilli tend to wiggle? Three Points.
When chromosomes move toward the edge of a cell, how is the spindle getting shorter? Three Points.
In many animals, what a sperm nucleus enters is not an actual ovum – why is its production not complete by then? Three Points.
Why is it called spiral cleavage? Three Points.
What is it about polyploidy that makes it particularly lethal? Three Points.
Briefly explain (don’t just describe) the white matter – gray matter distribution differences between the spinal cord and the brain. Three Points.
Why is genetics-based classification of prokaryotes particularly difficult? Three Points.
What two funding-rich areas of research are particularly interested in telomeres? Two Points Each.