Download B 262, F 2010

BIOLOGY 262, FALL 2010 – SECTION 1
EXAMINATION #3 (PART 1)
Date
Name
MULTIPLE CHOICE.⎯For the following multiple choice questions circle the letter in front of the
response that best answers the question or completes the sentence. (20%, 2% each)
6. A population of 400 fish is undergoing
1. Which of the following IS an assumption
logistic pop. growth with an intrinsic rate
of scientific philosophy?
a. Different events must be caused
of increase of 0.20 and a carrying capacity
uniquely.
of 2000. What is the pop. size after 1
b. Hypotheses can be proven True.
year?
c. Sense experience represents reality with
a. 16
f. 404
some reasonable consistency.
b. 32
g. 464
d. The universe is chaotic (unordered).
c. 64
h. 480
e. None of the above. (None are assumptions of
d.
80
i. 800
scientific philosophy)
e. 400
j. None of the above.
2. Which of the following is a correct species
name for the staph infection bacterium?
7. For a population of 200 mice AT Hardya. aureus
Weinberg equilibrium with 72 individuals
b. aureus
with the AA genotype, how many
c. staphylococccus aureus
individuals are Aa?
d. staphylococcus aureus
a.
6
f. 123
e. Staphylococcus aureus
b.
8
g. 144
f. Staphylococcus aureus
c. 36
h. 192
3. Which of the following is the taxonomic
d. 67
i. 200
rank between Kingdom & Class?
e. 96
j. None of the above.
a.
b.
c.
d.
e.
Genus
Kingdom
Order
Phylum
Species
4. Which of the following is when a
bacterium takes in DNA (as a plasmid)
directly from another bacterium?
a. binary fission
b. conjugation
c. transcription
d. transformation
e. None of the above
5. Which of the following ponds should have the
greatest species richness?
a. Large, far from lake, high nutrients
b. Large, far from lake, moderate nutrients
c. Large, far from lake, low nutrients
d. Large, near lake, high nutrients
e. Large, near lake, moderate nutrients
f. Large, near lake, low nutrients
g. Small, far from lake, high nutrients
h. Small, far from lake, moderate nutrients
i. Small, far from lake, low nutrients
j. Small, near lake, high nutrients
k. Small, near lake, moderate nutrients
l. Small, near lake, low nutrients
8. Given the following genotypes in a
population: 9 AA, 420 Aa, 490 aa. Is this
population evolving with respect to the
“A” gene?
a. No
b. Yes
c. Cannot determine with the info. given.
9. Which of the following is TRUE about
bryophyte gametophytes?
a. They are the dominant generation.
b. They make gametes by meiosis.
c. They make spores by mitosis.
d. They do not undergo photosynthesis.
e. None of the above (All are false.)
10. Determine the status of the hypothesis
that plant species richness will be
greater in shade using these data:
Mean species richness in shade = 22.4
Mean species richness in sun = 24.9
P-value = 0.09
a. Hypothesis Supported
b. Hypothesis Rejected
c. Cannot determine with the info. given.
FILL-IN-THE-BLANK/SHORT PROBLEM.⎯For the following exercises write the appropriate word or
words in the available space, sketch, or label as appropriate.
1. In the space below sketch and label a “typical” FUNGAL cell. Be certain to label all the
important structures AND indicate what biomolecules compose each structure. (10%)
DEFINITIONS.⎯For the following BIOLOGICAL words or phrases define them as accurately and
concisely as possible. (20%, 4% each)
1. Bacterial Strain:
2. Ecological Succession:
3. Endosperm:
4. Natural Selection:
5. Science:
Name
BIOLOGY 262, FALL 2010 - EXAMINATION #3 (PART 2)
Date
FREE RESPONSE QUESTIONS/PROBLEMS.⎯For the following, address each in as concise and lucid a
manner as possible. Do NOT exceed the space provided. (50%)
1. a.) Write down the summative chemical equation for photosynthesis.
b.) Briefly (in 1 phrase or sentence) why does an organism undergo photosynthesis?
c.) Where in a cell does photosynthesis occur.
d.) Write down the summative chemical equation for glycolysis + cellular respiration.
e.) Briefly (in 1 phrase or sentence) why does an organism undergo glycolysis + cellular
respiration?
f.) Where in a cell does glycolysis + cellular respiration occur.
2. Describe/explain the life cycle of a member of Phylum Coniferophyta. Include all life cycle stages,
relevant unique structures, and label their ploidy. Also indicate all cellular processes that occur.
Indicate the life cycle generation that is considered to be dominant. (20%) (Feel free but do not feel obliged
to use labeled illustrations for your answer.)
3. Briefly (in 1 sentence) explain how genetic drift and natural selection differ. (4%)
4. Based on the videos observed in class and your reading of The Evolution Explosion, explain
why and how resistance to antibiotics arises and becomes common in bacteria. (4%)
Based on the video observed in class and your reading of The Evolution Explosion, briefly
explain why scientists expect that a reduction of the amount of antibiotics in the
environment (via less use in animal feed and ending unnecessary prescriptions) would cause
a decrease in the number of already resistant bacteria in the population. (4%)
5. Generally explain the carbon cycle and how it is related to global climate change. (Feel free
but do not feel obliged to use a labeled diagram + a short phrase for your answer.) (8%)