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Biology S2
Test Description: The second semester of Biology
Instructions: Answer all questions to get your test result.
1) A controlled experiment allows the scientist to isolate and test
A
a conclusion
B
a mass of informatrion
C
several variables
D
a single variable
2) Enzymes affect the reactions in living cells by changing the _____ of the reaction.
A
pH
B
products
C
temperature
D
speed
3) A theory
A
is always true
B
is a problem to be solves
C
is the opening statement of an experiement
D
may be revised or replaced
4) The algae at the beginning of the food chain are
A
detritivores
B
decomposers
C
consumers
D
producers
5) An organism that uses energy to produce its own food supply from inorganic compounds is called a(an)
A
heterotroph
B
consumer
C
detritivore
D
autotroph
6) What animals eat both producers and consumers?
A
omnivores
B
herbivores
C
autotrophs
D
chemotrophs
7) Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the res
A
stored as body tissue
B
used in reproduction
C
stored as fat
D
lost as heat
8) What is one difference between primary and secondary succession?
A
Secondary succession begins on soil, and primary succession begins on newly exposed surfaces.
B
Primary succession is slow, and secondary succession is rapid.
C
Secondary succession begins with lichens, and primary succession begins with trees.
D
Primary succession modifies the environment, and secondary succession does not.
9) What can cause a population to grow?
A
The birthrate stays the same, and the death rate increases.
B
The birthrate becomes lower than the death rate.
C
The birthrate and the death rate remain the same.
D
The birthrate becomes higher than the death rate.
10) Which is NOT an adaptation that organisms have for living in flowing water?
A
suckers
B
streamlined bodies
C
tenticles
D
hooks
*select an answer for all questions
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