In bacteria, single polycistronic mRNA encodes for:
A) a single enzyme although there are many in the metabolic pathway.
B) multiple enzymes of the particular pathway.
C) a single mRNA which is split into multiple mRNAs before translation.
D) a single peptide with multiple catabolic sites.
E) none of the above.

Question

Quizplus · Accepted Answer

In bacteria, single polycistronic mRNA encodes for multiple enzymes of the particular pathway. This means that the mRNA contains multiple open reading frames (ORFs) that encode for different enzymes of the same pathway. Therefore, a single mRNA can produce several proteins at once.

In Bacteria, Single Polycistronic MRNA Encodes For