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Lecture 1

BIOL 1001 Lecture Notes - Lecture 1: Proctor, Scantron Corporation, AisleExam


Department
Biology
Course Code
BIOL 1001
Professor
Tamara Kelly
Lecture
1

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Biology 1911 Exam February 26th, 2010
Exam test code 11 Exam Sequence Number:
Exam Test Code and Exam Sequence Number must be recorded on scantron
Have your Temple ID available for inspection on the desktop
Show it to proctors when you turn in exam
PRINT your name (neatly) as it appears on your TU ID
______________________________________
Your Temple ID # _____________________________
Lab instructor’s name & lab section no. ____________________________
Your signature ____________________________________
Instructions for completing scantron information are on overhead
During the exam:
Record multiple choice answers on exam as well as scantron.
You may not leave early unless you are in an aisle seat.
You may not leave within 5 minutes of the end of the exam.
When time is called:
Bring exam, scantron and TU ID to the proctor collecting exams with your color.
Place your exam and scantron in separate boxes marked for each.
Show your ID to instructor at exit.
NO QUESTIONS WILL BE ANSWERED DURING EXAM
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Each question is worth 2 points. All answers must be on the scantron.
1. The "heat" in chili peppers is due to a molecule called capsaicin. Suppose you breed chili
peppers that have low amounts of capsaicin over many generations in order to make them
milder (have less capsaicin). What process is occurring?
a) Inherited variation
b) Artificial selection
c) Natural selection
d) Environmental change
e) none of the above
2. What are the requirements for evolution by natural selection in a given population?
a) (1) The population varies; (2) all variations are heritable; (3) some individuals produce
more offspring than others
b) (1) Individuals in a population vary; (2) the variation is neutral; (3) offspring are
produced that can survive; (4) certain traits lead to greater reproductive success than
other traits.
c) (1) Individuals in a population vary; (2) the variation is heritable; (3) all individuals have
different alleles.
d) (1) Individuals in a population vary; (2) the variation is heritable; (3) some individuals
produce more offspring than others; (4) certain traits lead to greater reproductive
success than other traits.
3. Which of the graphs below best represents the relationship between the intensity of directional
selection and the genetic variation present within a population?
4. The Dunkers are a religious group that moved from Germany to Pennsylvania in the mid-
1700s. They do not marry with members outside their own immediate community. Today, the
Dunkers are genetically unique and differ in gene frequencies, at many loci, from all other
populations including their original homeland. Which of the following likely explains the genetic
uniqueness of this population?
a) population bottleneck and Hardy-Weinberg equilibrium
b) heterozygote advantage and stabilizing selection
c) sexual selection and inbreeding depression
d) mutation and natural selection
e) founder effect and genetic drift
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5. You own 300 acres of patchy temperate forest. Which one of the following actions would
increase the net primary productivity of the area the most?
a) Planting 500 new trees
b) Adding fertilizer to the entire area
c) Introducing 100 rabbits into the area.
d) Relocating all the deer in the area
e) Irrigating the area.
6. In the diagram at the right, which species is
more successful in competing for seeds?
a) species 1
b) species 2
c) These species do not compete for
seeds.
d) This graph does not illustrate which
species is more successful.
e) The two species compete equally over
the entire range of seed sizes.
7. Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate
pollution is also a suspected cause of anoxic “dead zones” in the ocean. Which of the following
might help reduce nitrate pollution?
a) rotating crops in fields frequently with legumes
b) adding nitrifying bacteria to the soil
c) adding denitrifying bacteria to the soil
d) using ammonia instead of nitrate as a fertilizer
e) none of the above
8. Looking at the figure, which community has the highest species richness?
a) community 1
b)community 2
c) community 3
d) community 4
e) all communities
equal
9. Some birds follow moving swarms of army ants in the tropics. As the ants march along the
forest floor hunging insects and small vertebrates, birds follow and pick off any insects or small
vertebrates that fly or jump out of the way of the ants. This is an example of what kind of species
interaction?
a) competition
b) consumption
c) parasitism
d) mutualism
e) commensalism
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