EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Laboratory experiments have produced liposomes abiotically.
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The oldest fossilized cells resemble prokaryotes.
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Liposomes closely resemble prokaryotic cells.
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Prokaryotic cells lack nuclei.
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Detailed explanation-1: -"Pro” means “before, ” and prokaryotes have DNA in a freely floating ring that is not encased in a nucleus. “Eu” means “true, ” and eukaryotes have DNA arranged in chromosomes and encased in a nucleus. Fossil evidence indicates that prokaryotic cells first existed on the earth, prior to the arrival of the eukaryotes.
Detailed explanation-2: -The oldest fossil evidence of eukaryotes is about 2 billion years old. Fossils older than this all appear to be prokaryotes. It is probable that today’s eukaryotes are descended from an ancestor that had a prokaryotic organization.
Detailed explanation-3: -So the correct option is ‘prokaryotes evolved before eukaryotes’.
Detailed explanation-4: -Microbial mats or large biofilms may represent the earliest forms of prokaryotic life on Earth; there is fossil evidence of their presence starting about 3.5 billion years ago.