Answer: The correct answer for the fill in the blank is B) Survive on its own.
A single celled organism also called as unicellular organism can survive on its own. This is because it is capable of performing all the essential life processes like respiration, digestion, reproduction, locomotion, and excretion by its own.
Example of unicellular organism- Amoeba.
Thus, option B) is the correct answer for the fill in the blank.
Operons afford the organism the opportunity to
simultaneously regulate transcription of multiple genes, whose products are
active in the same process. Operons lead to the synthesis of groups of functionally
related enzymes, usually from a single mRNA transcript hence makes regulation of
the genes highly efficient.
