Practice Origin Of Life On Earth (5.2) - Human Evolution

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9 questions

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3 cards from this section. Quick, good the night before a test.
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6 sample questions

Question 1.
What does the term 'unicellular' mean?
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Think about how many cells make up these organisms.
Question 2.
How long ago did life start on Earth?
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Consider the geological time scale.
3Question 3.
How many years ago did life start on Earth?
- 2 billion years
- 3.5 to 4 billion years
- 1 million years
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Think about the oldest fossil evidence.
4Question 4.
True or False: All early life forms were multicellular.
- True
- False
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Consider the definitions of unicellular and multicellular.
Question 5.
Explain how the concept of the primordial soup relates to the origin of life and cite examples of experiments that support this hypothesis.
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Think about how early Earth conditions were replicated in the lab.
Question 6.
Compare the evolutionary significance of unicellular organisms with that of complex multicellular organisms.
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Consider how evolution from simple to complex forms reflects adaptation and survival.

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