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abiotic
.1 Base your answer to this question on the diagrams given and on your knowledge of biology. The
diagrams represent how various populations interact in a forest environment. Which diagram, A or B,
most accurately represents interactions between biotic and abiotic factors in a forest environment?
(1) A (3) A and B
(2) B (4) Neither A or B
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abiotic
.2 Study the diagram shown. Use your knowledge of biology and the diagram to answer this question.
Identify one abiotic factor that would directly affect the survival of organism A shown
in the diagram.
(1) oxygen level in the water (3) the plants growing in the water
(2) bird feeding on the fish (4) the rocks at the bottom of the water
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absoprtion
.3 A glucose-tolerance test was conducted to o bserve the effect of time on glucose concentration in the
blood. An animal was fed 10 milliliters of glucose solution. At five different times after the ingestion
of the solution, the blood glucose concentration was determined, and the results were recorded in
the data table as shown. The change in glucose concentration in the blood between 0 and 30 minutes
was probably due to
(1) the liver releasing glucose into the (3) the synthesis of glucose from starch
small intestine
(2) glucose being absorbed from the (4) glucose being used for cellular
digestive s ystem respiration
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acidai rn
.4 Base your answer to this question on the information below. Acid rain can have a pH between 1.5 and
5.0. The effect of acid rain on the environment depends on the pH of the rain and the characteristics
of the environment. It appears that acid rain has a negative effect on plants. The scale shows the pH
of normal rain. What is the pH of Normal rain?
(1) 1.5 (3) 5.5
(2) 2.5 (4) 6.5
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aec ttspiavnotrr
.5 The diagram shown represents movement of a large molecule across a membrane. Which process is
best represented in this diagram?
(1) active transport (3) protein building
(2) diffusion (4) gene manipulation
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.6 The graph shows the relative concentrat ions of different ions inside and outside of an animal cell.
Which process is directly responsible for the net movement of K+ and Mg++ into the animal cell?
(1) electrophoresis (3) active transport
(2) diffusion (4) circulation
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.7 Which row in the chart best describes the a ctive transport of molecule X through a cell membrane?
(1) 1 (3) 3
(2) 2 (4) 4
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.8 The diagram shown represents a cell and several molecules. The number of molecules shown
represents the relative concentration of the molecules inside and outside of the cell. Molecule B could
enter the cell as a direct result of
(1) digestion (3) active transport
(2) diffusion (4) enzyme production
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aec ttspiavnotrr
.9 Base your answer to this question on the diagram shown, which represents a unicellular organism in a
watery environment. The ▲s represent molecules of a specific substance. Arrow A represents active
transport. What is one way that active transport is different from diffusion?
(1) active transport requires the use of (3) active transport excretes carbon dioxide
energy
(2) active transport is the same as diffusion (4) active transport shows dynamic
equilibrium
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adaptation
0.1 The diagram shown illustrates the change that occurred in the physical appearance of a rabbit
population o ver a 10-year period. Which condition would explain this change over time?
(1) a decrease in the mutation rate of the (3) an increase in the advantage of having
rabbits with black fur white fur
(2) a decrease in the advantage of having (4) an increase in the chromosome
white fur number of the rabbits with black fur
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adaptation
1.1 A photograph of a polar bear in its environment is shown. One possible reason why polar bears might
not be able to survive if the environment they live in changes is because. (Photo Source:
http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/
environment/3_adapt_to_fit1.shtml)
(1) the species will experience decreased (3) there will be a larger variety of food
competition for mates sources available
(2) the new environment will cause greater (4) they are adapted to the specific
variation in the species environment in which they now live
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adaptation
2.1 Note: ROTATE your test paper to the LEFT to properly orient the diagram. QUESTION: Base your
answer to this question on the diagram shown and on your knowledge of biology. One possible
conclusion that can be drawn regarding ancestral horses A and B is that
(1) A was better adapted to changes that (3) competition between A and B led to the
occurred during the Pliocene Epoch extinction of Pliohippus
than was B
(2) the areas that B migrated to contained (4) the adaptive characteristics present in
fewer varieties of producers than did both A and B were insufficient for
the areas that A migrated to survival
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adaptation
3.1 Researchers discovered four different species of finches on one of the Galapagos Islands. DNA
analysis showed that these four species, shown in the illustration, are closely related even though they
vary in beak shape and size. It is thought that they share a common ancestor. Which factor most
likely influenced these differences in beak size and shape?
(1) Birds with poorly adapted beaks (3) Birds with successful beak adaptations
changed their beaks to get food obtained food and survived to have
offspring.
(2) Birds with yellow beaks were able to (4) Birds with large, sharp beaks become
hide from predators. dominant.
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adaptation
4.1 What is the most probable reason for the i ncrease in the percentage of variety A in the population of
the species shown in the graph?
(1) There is no chance for variety A to (3) Variety A is less fit to survive than
mate with variety B. variety B is.
(2) There is no genetic difference between (4) Variety A has some adaptive advantage
variety A and variety B. that variety B does not have.
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adaptation
5.1 Base your answer to this question on the information and diagram shown and on your knowledge of
biology. Finches on the Galapagos Islands are thought to have originated from South America and
to have evolved into new species over the last 10,000 years. Some of this evolution is represented in
the diagram shown. The success of the finches on the Galapagos was m ost likely due to the
(1) large numbers of other birds competing (3) birds occupying the same island
for food
(2) mutations occurring in every offspring (4) birds adapting to different niches
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adaptation
6.1 The diagram shown represents the bone arrangements in the front limbs of three different
species of mammals. The similarities and differences in these limbs suggest that all three species
developed from the same ancestor, but
(1) produced different numbers of offspring (3) adapted to different habitats
(2) lived in different time periods (4) migrated to similar habitats
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adaptation
7.1 Base your answer to this question on the information given and on your knowledge of biology. Y es,
This Big Lizard is Pink. A new study from the University of Rome Tor Vergata shows that a rare
strawberry-tinted land iguana [rosada iguana] in the Galapagos Islands is genetically distinct from
other iguanas there, having diverged from them more than five million years ago as the
archipelago [a group of islands] formed. The rosada iguana, which escaped Darwin’s notice, was
discovered only recently, largely because it lives on the desolate slopes of an active volcano.
Source: Smithsonian, March 2009. W hich diagram best represents the evolutionary pathway of the
strawberry-tinted iguana?
(1) 1 (3) 3
(2) 2 (4) 4
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adaptation
8.1 The diagrams show the bones in the forelimbs of three different organisms. Differences in the bone
arrangements support the hypothesis that these organisms
(1) are members of the same species (3) have adaptations to survive in different
environments
(2) may have descended from the same (4) all contain the same genetic information
ancestor
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