Download B 262, S 2009

Name
BIOLOGY 262, SUMMER 2009 – IN CLASS
EXAMINATION #2 (PART 1)
Date
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) Need exper
The samples below measured the duration of flu
1. Which of the following is NOT an
in patients based on administration of the drug
assumption of science?
FluAid. The hypothesis is that FluAid will
a. Different events can have the same
decrease
the duration of seasonal flu.
general predictable cause.
Table. Days of flu symptoms. P-value for comparison
b. Scientists are always correct.
between the samples from the two areas = 0.031
c. Sense experience consistently and
Given FluAid
7
5
6
3
9
7
accurately represents reality.
Given placebo
4
5
2
2
4
5
d. The universe is ordered.
6. For the study above which of the following is
e. None of the above. (All are assumptions)
2. In a population at Hardy-Weinberg
equilibrium, if the frequency of AA is
0.16, then what is the frequency of aa?
a. 0.16
b. 0.36
c. 0.48
d. 0.84
e. None of the above
3. If a population of 7000 is undergoing
exponential growth with a yearly intrinsic
rate of increase of 0.20 then what is the size of
the population after 2 years?
a. 1400
b. 2800
c. 9800
d. 10080
e. None of the above
4. If a population of 1000 is undergoing logistic
growth with a yearly intrinsic rate of increase
of 0.50, and a carrying capacity of 100000
then what is the size of the population after 2
years? (round ≥0.5 up and <0.5 down if needed)
a. 1990
b. 2000
c. 2154
d. 2258
e. None of the above.
10. Which of the following most limits
terrestrial primary production?
a. Light intensity and nutrients.
b. Light intensity and precipitation.
c. Light intensity and temperature.
d. Nutrients and temperature.
e. Precipitation and temperature
the treatment?
↑
a. FluAid.
b. Days with symptoms.
c. Repeating the sampling.
d. The flu virus.
e. None of the above.
↑
a. rejected.
b. supported.
c. (this cannot be determined with these data)
7. The hypothesis is…
8. In an experimental study, the group that
does not receive the treatment and is the
basis for comparison is the…
a.
b.
c.
d.
experimental group.
naturalistic group.
negative control group.
positive control group.
9. Death of small and large sparrows during
storms as described in The Evolution
Explosion is an example of…
a. artificial selection.
b. directional selection.
c. disruptive selection.
d. sexual selection.
e. stabilizing selection.
5. Which of the following is a correct species
name?
a. tuberculosis
b. Tuberculosis
c. tuberculosis
d. Tuberculosis
e. Mycobacterium
f. Mycobacterium
g. Mycobacterium tuberculosis
h. Mycobacterium Tuberculosis
i. Mycobacterium tuberculosis
j. Mycobacterium Tuberculosis
SHORT ANSWER.⎯For the following briefly answer as appropriate. (10%)
1. Fill in the missing ranks in the Linnean
3. List three things that are inaccurate or
classification below. (2%)
misleading about the illustration. (3%)
Kingdom
Class
Species
2. Fill in the empty cells in the life table
below for a cohort of squirrels. (5%)
Survivor- SurvivorAge
Number
ship
ship Rate
0
2000
1
500
2
250
3
200
a.
b.
c.
Type of survivorship?
DEFINITIONS.⎯For the following BIOLOGICAL words or phrases define them as accurately and
concisely as possible. (20%, 4% each)
1. Competitive Exclusion:
2. Monophyletic Group:
3. Mutation:
4. Natural Selection:
5. Primary Production:
Name
BIOLOGY 262, SUMMER 2009, EXAMINATION #2 (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. Use the data below to construct a phylogenetic tree of the species in the left column. Show the derived traits
on your phylogenetic tree. OG = Outgroup
(12%)
large
repro.
structure
sexual
spore
position
dikaryoti
c stage
sexual
spores
held in
flagella
portobello
present
under cap
present
4s
absent
chantrelle
present
under cap
present
4s
absent
morel
present
facing up
present
8s
absent
cup fungus
present
facing up
present
8s
absent
black bread
mold
absent
facing up
absent
4s
absent
chytrid
Outgroup
absent
facing up
absent
4s
present
2. For a population is composed of individuals with the following genotypes.
BB = 360
Bb = 280
bb = 360
a.) Is the “B-b gene” in this population is at Hardy-Weinberg equilibrium? (Note: Generally show your
calculations and you will not use a statistical test, simply compare.) (10%)
b.) Based on the determination you made in 3.a. above, what would be a logical biological interpretation for what
you observed (based on processes discussed in class). What could explain the concordance with or deviation
from Hardy-Weinberg equilibrium? (Do not exceed 1-2 sentences.) (2%)
3. In human history until the 20th century disease and famine (= widespread starvation) often caused
significant reduction in human population size. War very rarely did. Why? (Explain briefly in 1-2
sentences.) (4%)
4. Provide the chemical formula for the overall processes of photosynthesis and glycolysis + respiration.
Be sure to include the chemical symbols if you use the names of each molecule. (8%)
Generally explain how these two processes are related to concerns about global climate change
(global warming). (4%)
5. Based on the videos observed in class and your reading of The Evolution Explosion, explain why and
how resistance to antibiotics arises in bacteria. (10%) (Feel free but do not feel obliged to use a table in your
answer.) (5%)
Based on the videos 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 BOTH a reduction in the
frequency of appearance of newly resistant bacteria AND a decrease in the number of already
resistant bacteria in the population. (5%)