Indicate true (T) and false (F) statements below regarding the RNA world hypothesis. Your answer would be a four-letter string composed of letters T and F only, e.g. TFFF.
( ) According to this hypothesis, RNA in primitive cells was responsible for storing genetic information, while proteins were responsible for the catalysis of chemical reactions.
( ) The existence of natural ribozymes supports this hypothesis.
( ) In support of this hypothesis, all peptides in present-day cells are made by the ribosome.
( ) All present-day cells use DNA as their hereditary material.

Question

Indicate true (T) and false (F) statements below regarding the RNA world hypothesis. Your answer would be a four-letter string composed of letters T and F only, e.g. TFFF.
( )	According to this hypothesis, RNA in primitive cells was responsible for storing genetic information, while proteins were responsible for the catalysis of chemical reactions.
( )	The existence of natural ribozymes supports this hypothesis.
( )	In support of this hypothesis, all peptides in present-day cells are made by the ribosome.
( )	All present-day cells use DNA as their hereditary material.

Quizplus · Accepted Answer

The hereditary material in all present-day cells is DNA, but according to the RNA world hypothesis, RNA preceded DNA (as genetic material) as well as proteins (as catalysts). Some short peptides are synthesized without the ribosome, an observation that provides clues as to how the early transition from an RNA world to a protein-dominated world might have initiated.

Indicate True (T) and False (F) Statements Below Regarding the RNA