 1,000,000
 500,000
 250,000
 125,000
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64,000
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32,000
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16,000
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8,000
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4,000
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2,000
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1,000

500
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300
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200

100
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answers, then Cont-A to
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Theory A is a well-established scientific theory. One hypothesis that
could refute this theory is successfully tested over many
experiments. What action must be taken for this hypothesis to pose
a legitimate challenge to Theory A?
A. publishing data for peer
review
C. Bacteria were the first type of
living organisms to appear on earth
B. Life evolved on earth from
inanimate chemicals
D. Complex organic molecules can form
spontaneously under conditions that
probably existed on the early earth
A.publishing data for peer review
Back to
Board
A student performed an investigation of blood pressure. The data is
shown above in the table. The student concluded the resting heart rate
affects the resting blood pressure. Which statement support’s the
student’s conclusion?
A. Subjects Q and S have the same
resting blood pressure
B. Subjects Q and R are different
ages
C. Subjects R and T have different
resting blood pressure
D. Subjects S and T are the same
gender
C. Subjects R and T have different
resting blood pressure
Back to
Board
The diagram above shows the process of
meiosis. The segregation that occurs during
meiosis results in a
A. Decrease in the total number of
cells per organism
B. reduction in the number of
chromosomes per cell
C. single fertilized egg cell
D. group of genetically identical
cells
B. reduction in the number of
chromosomes per cell
Back to
Board
Scientists determined that excess fertilizer from farms entered a shallow lake. The
fertilizer caused an increase in aquatic plants in the lake and then a decrease in oxygen in
the water. Next, organic debris collected on the bottom of the lake. Over several years,
the lake gradually filled in with organic sediment.
As the fertilizer levels increased, the population of consumers in the lake declined.
Which change most likely caused this decline?
A. Decrease in available oxygen
B. increase in light intensity
C. Increase in temperature
D. Decrease in carbon dioxide
Decrease in available oxygen
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Board
Loriciferans are microscopic multicellular animals that live in various marine
sediments. Scientists have discovered genera of Loriciferans in a deep-sea
habitat that lacks oxygen. Before this discovery, some prokaryotes and some
unicellular eukaryotes were known to inhabit anaerobic environments. Among
the newly discovered Loriciferans is Spinoloricus sp nov., which is show above.
Scientists determined that organisms of the genus Spinoloricus were
eukaryotes and not prokaryotes because Spinoloricus cells have
A. Flagella
B. Hereditary material
C. Cell walls
D. nuclear membranes
D. nuclear membranes
Back to
Board
The diagram above represents part of a process that
occurs in cells. Which process is represented?
A. Meiosis
B. osmosis
C. translation
D. replication
C. translation
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Board
The pictures above show the limbs of four different species.
The four species illustrated most likley have similar limb
structures because they all
A. Use their limbs for the
same function
B. Share a common ancestor
C. Occupy the same level in a
food pyramid
D. Adapted to the same
environmental conditions
B. Share a common
ancestor
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Board
Amino acids link together by peptide bonds to form
proteins.
In which cellular organelle would this process occur?
A. Lysosome
B. Golgi body
C. ribosome
D. mitochondrion
C. ribosome
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Board
In a certain variety of chicken, some offspring have a feather pattern
that is black-and-white checkered. Chickens with this checkered feather
pattern result from the cross of a black chicken with a white chicken.
Which of the following types of inheritance is most likely responsible for
the checkered feather pattern?
A. polygenic
B. sex-linked
C. dominant
D. codominant
D. codominant
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Board
A student observes a unicellular organism under a microscope. After a
while, the organism begins to split into two cells, a shown in the
diagram. Which of these structures does the organism shown above
use to move itself?
A. nuclei
B. cilia
C. flagella
D. ribosomes
B. cilia
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Board
The results of a genetic process are represented in the diagram
above
A. crossing over during
meiosis
B. chromosomal mutation
C. Independent assortment
D. Nondisjunction during
meiosis
A. crossing over during
meiosis
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Board
The water quality of the Biscayne Bay is measured by the Biscayne
Bay Water Quality Monitoring Program. Scientists measure the
salinity, temperature, pH, and oxygen levels to help determine the
health of the Bay. Healthy water also contains appropriate amounts
of nutrients. Monitoring water quality helps communities make
decisions about the Bay. Which of these would likely be the most
immediate result if the oxygen levels in the Bay decreased by 90%?
A. decrease in salinity levels
B. decrease in fish populations
C. increase in producer
populations
D. increase in water
temperature
B. decrease in fish
populations
Back to
Board
The figure above shows genetic material. What information
confirms that this is an RNA molecule?
A. the molecule contains
adenine
B. The molecule has
hydrogen bonds.
C. the molecule is
single stranded
D. The molecule has a
sugar-phosphate backbone.
C. the molecule is
single stranded
Back to
Board
The chart below shows the results of an experiment to
determine the most likely area in which to find pill bugs. Which
graph below is the BEST representation of these data?
A.
B.
C.
D.
D.
Back to
Board
A biologist has hypothesized that a structure in the digestive tract
of birds is homologous to a structure in the digestive tract of
certain mammals. Which of the following findings would provide the
best evidence in favor of this view?
A. The two structures appear almost
identical at an early stage of
embryonic development
B. The genes coding for the two
structures utilize the same
nitrogenous bases
C. The structures are vestigial
in the digestive tracts of
both birds and mammals
D. The structures perform similar
digestive functions in
birds and mammals
A. The two structures appear
almost identical at an early stage
of embryonic development
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