Eukaryotic cells acquired mitochondria and chloroplasts by
A) endosymbiosis.
B) exocytosis.
C) pinocytosis.
D) mutation.
Correct Answer:
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Q2: Two principal organelles in eukaryotes that were
Q3: It has been discovered that enzyme-like catalysis
Q5: The oldest fossils of eukaryotes have been
Q7: Why is there free oxygen in the
Q8: The oldest microfossils are of
A)prokaryotes.
B)eukaryotes.
C)insects.
D)pollen grains.
Q9: Which of the following was produced in
Q10: Which of the following was demonstrated by
Q10: In the original experiments by Stanley Miller
Q11: The early Earth's reducing atmosphere probably contained
Q34: Prokaryotic organisms were the only life-forms present
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