| Topics | Questions | Media Resources |
22.1 Spontaneous Generation versus Biogenesis |
What is meant by spontaneous generation?
Answer
What is meant by biogenesis?
Answer
Describe the contribution of each of the following scientists to the
biogenesis/spontaneous generation debate: Spallanzani, Needham, Pasteur, Redi
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22.2 Current Thinking about the Origin of Life | -
List two kinds of evidence that support the
idea that life could have originated on land on Earth.
Answer
- List two
kinds of evidence that support the idea that life could have arrived on
Earth from space.
Answer
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22.3 The "Big Bang" and the Origin of the Earth |
How did the atmosphere, temperature, and surface of the newly formed
Earth differed from what exists today.
Answer
What is the approximate age of the Earth?
Answer
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22.4 Steps Needed to Produce Life from Inorganic Materials |
The current theory of the origin of life as a result of nonbiological
manufacture of organic molecules depends on our knowing something of Earth’s
history. Why is this so?
Answer
List two kinds of evidence that suggest RNA was the first genetic
material.
Answer
Describe two models that suggest how collections of organic molecules
could have been segregated from other molecules.
Answer
Why must the first organism on Earth have been anaerobic?
Answer
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22.5 Major Evolutionary Changes in the Nature of Living Things |
What evidence supports the theory that eukaryotic cells arose from
the development of an endosymbiotic relationship between primitive
prokaryotic cells?
Answer
Can spontaneous generation occur today? Explain.
Answer
List two important effects caused by the increase of oxygen in the
atmosphere.
Answer
In what sequence did the following things happen:
living cell, oxidizing atmosphere, respiration, photosynthesis, reducing
atmosphere, first organic molecule?
Answer
Why do scientists believe life originated in the seas?
Answer
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22.6 Evolutionary Time Line | - For each of the following pairs of terms, select the one that is the
earliest in geologic time.
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eukaryote---prokaryote
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marine----terrestrial
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vertebrate---invertebrate
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flowering plant---cone-bearing plant
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aerobic respiration---photosynthesis
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plants---animals
Answer
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