Origin and Evolution of Life and Introduction to Classification
Telangana Open School (TOSS) · Class 12 · Biology
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Quick Quiz: Origin and Evolution of Life and Introduction to Classification
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Which of the following is NOT a characteristic of living organisms?
Approximately how many years ago did life first evolve on Earth?
Which theory of origin of life is widely accepted today?
Which of the following gases was NOT present in the early Earth's atmosphere?
Sample Questions
What were the first forms of life on Earth?
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Heterotrophs
The earliest life forms were heterotrophs, depending on organic molecules in the environment for nutrition.
Which experiment simulated early Earth conditions to produce organic molecules?
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Miller-Urey experiment
Stanley Miller and Harold Urey conducted an experiment using gases like CH₄, NH₃, H₂, and H₂O with electric discharge to produce amino acids.
What are the building blocks of proteins?
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Amino acids
Amino acids are the monomers that form proteins through peptide bonds.
Which of the following is a vestigial organ in humans?
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Vermiform appendix
The vermiform appendix is a vestigial organ, functional in ancestors but reduced in humans.
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