All of the Following Are Aspects of a Cell's Ability

Multiple Choice

All of the following are aspects of a cell's ability to regulate its metabolism EXCEPT

A) synthesis or degradation of membrane transport proteins.
B) synthesis of a catabolic enzyme only when its substrate is available.
C) use of the most energy- efficient energy source available.
D) use of the same coenzymes for anabolic and catabolic reactions that share substrate molecules.
E) isolation of various enzymes within membranous organelles.