Transcript EOC 4

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Which hypothesis is best supported by this graph?
A. The cardinals’ food supply
increased
C. Dominant cardinal chicks
were the first to be fed
B. A disease of cardinals spread
throughout the park.
D. The population of cardinal
predators increased
A.The cardinals’ food supply
increased
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The pictures above show a cow and a bull and their calf. All three have
coats of the same colors. This calf developed from a zygote. During the
development of the zygote, a mutation occurred in a coat color gene.
Which of the following best explains why the calf’s phenotype is the
same as its parents?
A. The mutation is not present
in the parent animals.
B. The mutated gene is
passed on during reproduction
C. The mutation does not
affect the expression of the
color trait.
D. The mutated allele is
dominant over the parental allele.
C. The mutation does not
affect the expression of the
color trait.
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Humans could make the environment much more
sustainable if technology could derive most of
the world’s energy supply from
A. coal
B. The sun
C. wood
D. Fossil fuels
B. The sun
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Miller and Urey's experiments proved that
A. complex organic molecules can
form spontaneously under conditions
that probably existed on the
early earth
C. RNA can act as an enzyme and
assemble new
RNA molecules from RNA templates
B. life evolved on earth
from inanimate chemicals
D. bacteria were the first type
of living organism to appear
on the earth
A. complex organic molecules can
form spontaneously under conditions
that probably existed on the
early earth
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A growth curve for a population of crabs on a coral reef
is shown above.
Which statement best explains what is happening at
point A ?
A. Population growth decreases
as individual crabs get older.
B. Destruction of habitat is
causing a decline in the
population of the crabs.
C. The introduction of a new predator
is causing a decline in population
growth of the crabs.
D. The population is stabilizing
as it approaches carrying capacity.
D. The population is stabilizing
as it approaches carrying
capacity.
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On island chains like the one shown below, animal populations that
spread from the main island to the other islands can evolve into
separate species.
A.
Predators on the main island
can easily migrate to follow
the populations to the other islands.
B. Lack of disease on the other
islands enables the populations
to grow and change without limit.
C. The physical separation of the islands
limits gene flow and interbreeding
between the populations
D. The climatic conditions of the
islands allow the populations
to breed all year and produce
several generations.
C. The physical separation of the
islands limits gene flow and
interbreeding between the
populations
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The results of Pasteur’s experiment helped
Pasteur to
A. isolate the virus responsible
for smallpox
B. reject the theory
of spontaneous generation.
C. produce a vaccine
against rabies
D. convince people to
cover food
B. reject the theory
of spontaneous generation.
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Why do leaves tend to be flat?
A. so that water can easily
be absorbed and carried
to the rest of the plant
B. so that nutrients can easily
enter the plant and be used
for structure and support
C. so that sunlight can easily
penetrate to the leaf’s
photosynthetic tissues
D. so that plants can easily find
balance due to the symmetrical
nature of their branches
C. So that sunlight penetrate
to the leaf’s
photosynthetic tissues
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The diagram above represents the beginning and end products of a
process that occurs in the nucleus of the cell. Which process does the
diagram represent?
A. recombination
B. replication
C. translation
D. transcription
D. transcription
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Diagrams of a bent pinky finger and a straight pinky finger are shown above. The
allele for having a bent pinky finger is dominant to the allele for having a straight
pinky finger. If two people are both heterozygous for the trait of a bent finger,
what is the percent probability that the child will have a straight pinky finger?
A. 0 %
B. 25%
C. 75%
D. 100%
B. 25%
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A biotic or an abiotic resource in the
environment that limits the size of a population
is a
A. Limiting factor
C. Limiting nutrient
B. Carrying capacity
D. Growth factor
A. Limiting factor
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A diagram of a cell is shown above. Proteins
are synthesized in which organelle?
A. 1
C. 2
B. 3
D. 4
B. 4
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Which of these is a density-independent limiting
factor?
A. Any increase in population
B. The introduction of a parasite
C. An earthquake
D. A decrease in predators
C. An earthquake
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A marine food web is shown above.
Which of the following diagrams correctly represents an energy
pyramid from this web?
A.
B.
C.
D.
D.
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When red-flowered snapdragons are crossed with white-flowered
snapdragons, all of the offspring have pink flowers. When these
pink-flowered snapdragons are crossed, one-fourth of the F2
offspring will have red flowers, one-fourth will have white flowers
and one-half will have pink flowers. This pattern of inheritance is
most likely due to
A. incomplete dominance of
either the red or the white allele.
B. codominance of both
the red and white alleles.
C. dominance of the
red allele over the white allele.
D. crossing over of the
two alleles during meiosis.
A.density-dependent
limiting factor
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