It Has Been Hypothesized That Early Life Consisted of an "RNA

question 2

Multiple Choice

It has been hypothesized that early life consisted of an "RNA world"-a world before DNA.Which statement does not support this hypothesis?

• A) Retroviruses have an enzyme that catalyzes the synthesis of DNA from RNA.
• B) Protein enzymes catalyze the great majority of reactions in living cells.
• C) Ribozymes catalyze formation of peptide linkages.
• D) Adding a short RNA sequence to a mixture of nucleotides causes formation of RNA polymers 7 million times faster than without the short sequence.
• E) An artificial ribozyme catalyzes assembly of short RNAs into a longer molecule that is a copy of itself.

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