Indicate true (T) and false (F) statements below regarding P-bodies. Your answer would be a four-letter string composed of letters T and F only, e.g. TTFT.
( ) P-bodies are membrane-enclosed organelles scattered throughout the cytoplasm.
( ) mRNAs that are to be degraded are transferred from P-bodies to stress granules containing decapping and exonuclease enzymes.
( ) When translation initiation is blocked, stress granules typically shrink.
( ) mRNAs associated with stress granules are primed for translation.

Question

Indicate true (T) and false (F) statements below regarding P-bodies. Your answer would be a four-letter string composed of letters T and F only, e.g. TTFT.
( )	P-bodies are membrane-enclosed organelles scattered throughout the cytoplasm.
( )	mRNAs that are to be degraded are transferred from P-bodies to stress granules containing decapping and exonuclease enzymes.
( )	When translation initiation is blocked, stress granules typically shrink.
( )	mRNAs associated with stress granules are primed for translation.

Quizplus · Accepted Answer

Even though they somehow function as "organelles," P-bodies are not membrane-enclosed. Many mRNAs are degraded in P-bodies, but some mRNAs move from P-bodies to stress granules, which contain mRNA-binding proteins that prime the mRNAs for translation. Translation itself, however, does not occur in stress granules. When translation initiation is blocked, stress granules enlarge as more and more nontranslated mRNAs are stored in them.

Indicate True (T) and False (F) Statements Below Regarding P-Bodies