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biology

Which of the following gives a possible sequence of organic chemicals prior to the proto -cell?

A

Water, salts, protein, oxygen

B

Inorganic gases, amino acids, polypeptide, microsphere

C

Inorganic gases, nucleotides, nucleic acids, genes

D

Both (b) and (c)

Answer

The photocell was not considered a cell until it contained the genes. According to the first RNA hypothesis, the first genes and enzymes were RNA molecules. The first protein hypothesis suggested that protein enzymes were needed before nucleic acids could form. So, the correct option is "both (b) and (c)".

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toppr

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