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Le August 2008 Multiple Choice

42 Questions  I  By Ionca
LE AUGUST 2008 MULTIPLE CHOICE
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1.  Base your answer to this question on the diagram below and on your knowledge of biology. Each arrow in the diagram represents a different hormone released by the pituitary gland that stimulates the gland indicated in the diagram. All structures are present in the same organism.  What would most likely occur if the interaction is blocked between the pituitary and gland C, the site of meiosis in males? 
A.
B.
C.
D.
2.  The graph below shows the levels of glucose and insulin in the blood of a human over a period of time.     This graph represents
A.
B.
C.
D.
3.  In all organisms, the coded instructions for specifying the characteristics of the organism are directly determined by the arrangement of the 
A.
B.
C.
D.
4.  Base your answer to this question on the information and diagram below and on your knowledge of biology. A small water plant (elodea) was placed in bright sunlight for five hours as indicated below. Bubbles of oxygen gas were observed being released from the plant.  Since oxygen gas is being released, it can be inferred that the plant is    
A.
B.
C.
D.
5.  The graph below represents a predator-prey relationship.  What is the most probable reason for the increasing predator population from day 5 to day 7? 
A.
B.
C.
D.
6.  Abiotic factors that characterize a forest ecosystem include 
A.
B.
C.
D.
7.  The diagram below represents the genetic contents of cells before and after a specific reproductive process.     This process is considered a mechanism of evolution because it    
A.
B.
C.
D.
8.  Which concept is best represented in the diagram shown below? 
A.
B.
C.
D.
9.  The females of certain species of turtles will sneak into a nest of alligator eggs to lay their own eggs and then leave, never to return. When the baby turtles hatch, they automatically hide from the mother alligator guarding the nest and go to the nearest body of water when it is safe to do so. Which statement best explains the behavior of these baby turtles? 
A.
B.
C.
D.
10.  Many homeowners who used to collect, bag, and discard grass clippings are now using mulching lawnmowers, which cut up the clippings into very fine pieces and deposit them on the soil. The use of mulching lawnmowers contributes most directly to 
A.
B.
C.
D.
11.  Base your answer to this question on the information and diagram below and on your knowledge of biology. A small water plant (elodea) was placed in bright sunlight for five hours as indicated below. Bubbles of oxygen gas were observed being released from the plant.  What substance did the plant most likely absorb from the water for the process that produces the oxygen gas?    
A.
B.
C.
D.
12.  Base your answer to this question on the diagram below, which represents stages in the digestion of a starch, and on your knowledge of biology.  The products would most likely contain    
A.
B.
C.
D.
13.  Base your answer to this question on the diagram below and on your knowledge of biology. Each arrow in the diagram represents a different hormone released by the pituitary gland that stimulates the gland indicated in the diagram. All structures are present in the same organism.  The pituitary gland may release hormone 2 when blood pressure drops. Hormone 2 causes gland B to release a different hormone that raises blood pressure which, in turn, stops the secretion of hormone 2.  The interaction of these hormones is an example of
A.
B.
C.
D.
14.  The data table below shows the presence or absence of DNA in four different cell organelles.  Information in the table suggests that DNA functions 
A.
B.
C.
D.
15.  Plants such as the Venus flytrap produce chemical compounds that break down insects into substances that are usable by the plant. The chemical compounds that break down the insects are most likely 
A.
B.
C.
D.
16.  A technique used to reproduce plants is shown in the diagram below.     This technique is a form of
A.
B.
C.
D.
17.  The diagram below represents early stages of embryo development.     The greatest amount of differentiation for organ formation most likely occurs at arrow    
A.
B.
C.
D.
18.  In 1883, Thomas Engelmann, a German botanist, exposed a strand of algae to different wavelengths of light. Engelmann used bacteria that concentrate near an oxygen source to determine which sections of the algae were releasing the most O2. The results are shown below.  Which statement is a valid inference based on this information? 
A.
B.
C.
D.
19.  Which row in the chart below contains an event that is paired with an appropriate response in the human body? 
A.
B.
C.
D.
20.  A student notices that fruit flies with the curly-wing trait develop straight wings if kept at a temperature of 16°C, but develop curly wings if kept at 25°C. The best explanation for this observation is that 
A.
B.
C.
D.
21.  The diagram below represents a genetic procedure.     Which statement best describes the outcome of this procedure?    
A.
B.
C.
D.
22.  The diagram below represents a biochemical process.     Which molecule is represented by X?    
A.
B.
C.
D.
23.  One possible reason for the rise in the average air temperature at Earth’s surface is that 
A.
B.
C.
D.
24.  The graph below indicates the size of a fish population over a period of time.  The section of the graph labeled A represents    
A.
B.
C.
D.
25.  To determine evolutionary relationships between organisms, a comparison would most likely be made between all of the characteristics below except 
A.
B.
C.
D.
26.  The diagram below shows a cell in the human body engulfing a bacterial cell.     The cell labeled X is most likely a    
A.
B.
C.
D.
27.  Deforestation of areas considered to be rich sources of genetic material could limit future agricultural and medical advances due to 
A.
B.
C.
D.
28.  Base your answer to this question on the diagram below, which represents stages in the digestion of a starch, and on your knowledge of biology.  The structure labeled X most likely represents    
A.
B.
C.
D.
29.  In December 2004, a tsunami (giant wave) destroyed many of the marine organisms along the coast of the Indian Ocean. What can be expected to happen to the ecosystem that was most severely hit by the tsunami? 
A.
B.
C.
D.
30.  Much of the carbon dioxide produced by green plants is not excreted as a metabolic waste because it 
A.
B.
C.
D.
31.  The size of a frog population in a pond remains fairly constant over a period of several years because of 
A.
B.
C.
D.
32.  Base your answer to this question on the diagram below and on your knowledge of biology. Each arrow in the diagram represents a different hormone released by the pituitary gland that stimulates the gland indicated in the diagram. All structures are present in the same organism.  Why does hormone 1 influence the action of gland A but not gland B or C?    
A.
B.
C.
D.
33.  Scientists studying ocean organisms are discovering new and unusual species. Which observation could be used to determine that an ocean organism carries out autotrophic nutrition? 
A.
B.
C.
D.
34.  A single cell and a multicellular organism are represented below.  Which structures are correctly paired with their primary function? 
A.
B.
C.
D.
35.  An organelle that releases energy for metabolic activity in a nerve cell is the 
A.
B.
C.
D.
36.  A pattern of reproduction and growth in a one- celled organism is shown below.  Which statement best describes this pattern of reproduction? 
A.
B.
C.
D.
37.  The DNA of a human cell can be cut and rearranged by using 
A.
B.
C.
D.
38.  Which statement best describes a population of organisms if cloning is the only method used to reproduce this population? 
A.
B.
C.
D.
39.  Which sequence shows a decreasing level of complexity? 
A.
B.
C.
D.
40.  One season, there was a shortage of producers in a food web. As a result, the number of deer and wolves decreased. The reason that both the deer and wolf populations declined is that 
A.
B.
C.
D.
41.  One disadvantage of a genetic mutation in a human skin cell is that it 
A.
B.
C.
D.
42.  In several species of birds, the males show off their bright colors and long feathers. The dull-colored females usually pick the brightest colored males for mates. Male offspring inherit their father’s bright colors and long feathers. Compared to earlier generations, future generations of these birds will be expected to have a greater proportion of 
A.
B.
C.
D.
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