Which of the following statements regarding energy systems is false? select one: a. all systems are active at all times but one may be predominant depending on the activity. b. the systems replenish atp by rephosphorylation. c. one system is switched on while the others are switched off. d. the systems vary in terms of speed of action, amount of atp replenished, and duration of action.

The correct answer is option C.  One system is switched on while the others are switched off is a false statement.

Explanation:

A biological energy system is a set of biochemical reactions known as metabolic processes that are concerned with the energy flow in an organism. In these processes energy converts into the ATP that is helpful in all types of cellular or muscular activity.

In the biological energy system, multiple or more than one system can be active at a time its not necessary that one system has to switch off while other is on.

Thus, the correct answer is option C. One system is switched on while the others are switched off is a false statement.