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The Role of RNA

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Questions and Answers

Which molecule is believed to have been the original information-storage molecule in the earliest forms of life on Earth?

RNA (correct)

DNA

Protein

Enzyme

What is the term used to describe the hypothesis that RNA was the original information-storage molecule in early life?

DNA world hypothesis

RNA world hypothesis (correct)

Protein world hypothesis

Enzyme world hypothesis

What is one of the key cellular processes in which RNA is involved?

DNA replication (correct)

Photosynthesis

Respiration

Cell division

What remarkable property does RNA share with DNA?

Ability to store information Signup and view all the answers

Who conducted experiments to show how RNA could have evolved the ability to catalyze a simple reaction?

Jack W. Szostak Signup and view all the answers

Which molecule was isolated and tested for its ability to catalyze reactions in the experiment described in the text?

RNA Signup and view all the answers

What happened to the RNA molecules that functioned best in each round of the experiment?

They were replicated Signup and view all the answers

How did the efficiency of the RNA catalysts change with each generation in the experiment?

They increased Signup and view all the answers

What is the main reason why many scientists believe RNA played a key role in the origin of life?

RNA can store information Signup and view all the answers

Why do cells now use DNA for information storage and processing?

DNA is more stable than RNA Signup and view all the answers