Exploring the Origin of Life and Classification in Biology

What does the theory of evolution explain?

• The origin of the universe

• The structure of atoms

• How organisms change over generations

• The formation of mountains

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What was the main finding of the Miller-Urey experiment?

• Organic molecules can form from inorganic compounds

• Life can form in the presence of oxygen

• Prokaryotic cells can evolve into eukaryotic cells

• Photosynthesis can occur without sunlight

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Which process allowed the emergence of complex eukaryotic cells?

• Primordial soup formation

• Chemosynthesis

• Endosymbiosis

• Anaerobic respiration

What is convergent evolution?

• When unrelated organisms come to resemble each other

• When related species become more different

• When two species evolve together and affect each other's evolution

• When species evolve rapidly to fill niches

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Which type of evolution involves species evolving rapidly to fill new niches?

• Coevolution

• Divergent evolution

• Convergent evolution

• Adaptive radiation

What is the broadest category in the current classification system?

• Class

• Domain

• Phylum

• Kingdom

Which kingdom includes organisms that are mostly unicellular and can form colonies?

• Plantae

• Animalia

• Protista

• Fungi

What characteristic is common to all living things?

• Having DNA

• Being multicellular

• Having a cell wall

• Being motile

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What is the main reason viruses are not classified as living organisms?

• They do not have DNA

• They cannot reproduce on their own

• They do not excrete waste

• They do not have a cell membrane

Which domain includes organisms that are prokaryotic and live in extreme environments?

• Bacteria

• Eukarya

• Archaea

• Protista