Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which process allows nitrogen to get back into the Nitrogen cycle?
a. | Ammonification | c. | Fixation | b. | Assimilation | d. | Nitrification |
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2.
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Which human activity has affected the Nitrogen cycle?
a. | deforestation | c. | using fertilizers | b. | burning fossil fuels | d. | strip mining |
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3.
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Which of the following help Nitrogen change between states so it can be used by
living things?
a. | fungi | c. | plants | b. | lightning | d. | bacteria |
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4.
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The absorption of Nitrogen in plants is called
a. | assimilation | c. | fixation | b. | ammonification | d. | denitrification |
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5.
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Which of the following biomolecules does not require nitrogen?
a. | proteins | c. | fats | b. | DNA | d. | chlorophyll |
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6.
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The first step in making nitrogen useful for plants is
a. | assimilation | c. | nitrification | b. | ammonification | d. | fixation |
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7.
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Which form of nitrogen is absorbed by plants?
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8.
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Which of the following is the state of Nitrogen in the atmosphere?
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