Short Answer
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1
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Briefly explain what happens to energy from the sun during
photosynthesis.
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2
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What are the raw materials needed for photosynthesis? What are the
products?
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3
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Why do organisms need to carry out the process of respiration?
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4
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Describe what happens during interphase.
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5
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How do the events in the cell cycle ensure that the genetic information in the
daughter cells will be identical to that of the parent cell?
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6
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Describe how cancer usually begins to develop in the body.Hint
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7
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Explain why it is important for people to wear protective clothing or use
sunscreen when they are outdoors in bright sunlight.
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8
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Suppose a volcano threw so much ash into the air that it blocked most of the
sunlight that usually strikes Earth. How might this affect the ability of animals to obtain the
energy they need to live?Hint
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9
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Explain the relationship between the processes of breathing and cellular
respiration.
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10
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Do plant cells need to carry out respiration? Explain.
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11
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The diagram below shows part of one strand of a DNA molecule. What would the
bases on the other strand be?  Figure showing one part of each DNA
nitrogen base pair.
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12
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What information could you give someone to persuade him or her not to start
smoking?
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Use the table below to answer the next 4 questions. 
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13
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For each organism, draw a bar graph to show the percentages of each nitrogen
base in its DNA.
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14
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What is the relationship between the amounts of adenine and thymine in the DNA
of each organism? What is the relationship between the amounts of guanine and cytosine?
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15
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Based on the relationship of the nitrogen bases, what can you infer about the
structure of DNA in these three organisms?
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16
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Suppose cytosine made up 28% of the nitrogen bases in an organism. What
percentage of the organism’s nitrogen bases should be thymine? Explain.
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17
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Explain the relationship between cell division and cancer. How do scientists
believe cancer starts? What causes a tumor to form?
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