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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 4.

Multiple Choice Questions

1. Why does the author use the word "apparently" to describe selfish or unselfish behavior?
(a) Because he doesn't really believe in the terms selfish and unselfish.
(b) Because behavior may only seem selfish or unselfish.
(c) Because he is only concerned about appearances of selfishness.
(d) Because he doesn't believe the examples he is citing are necessarily true.

2. What would not have existed in early oceans, that would have allowed amino acids and proteins to exist for long periods of time, to slowly develop into more complex forms?
(a) Acids.
(b) Enemies.
(c) Sunlight.
(d) Electricity.

3. What would happen to an early molecule that made many more copies of itself than other molecules made of themselves?
(a) There would be a lower chance of copies of it surviving.
(b) There would be too many copies identical to the original, and they would mutually destruct.
(c) There would be a greater chance of copies of it surviving.
(d) There would be fewer copies that were similar to the original.

4. What would molecules that started to manufacture energy using the sun eventually become?
(a) Plants.
(b) Animals.
(c) Inorganic materials.
(d) Single-celled organisms.

5. What would competition between early self-copying molecules be over?
(a) Water.
(b) Gaseous molecules.
(c) Space.
(d) Building-block molecules.

Short Answer Questions

1. What apparently selfish act of the praying mantis does the author describe?

2. What shape does the author say water molecules in space make?

3. How does Darwin characterize the idea that the goal of evolution is for a species to survive, so individuals will take actions that are good for the species?

4. What apparently unselfish act of a bee does the author describe?

5. If two genes normally cooperate, what happens when one gene is missing?

(see the answer key)

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