If Samples Were Brought Back from a Distant Planet, Which

question 109

Multiple Choice

If samples were brought back from a distant planet, which would be the first evidence of life in them, assuming their evolution followed the same path as on Earth?

• A) Presence of nucleic acids
• B) Multicellular life forms
• C) Presence of oxygen
• D) Cell membranes
• E) Presence of fatty acids

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