Final answer:
The rate at which molecules are actively transported across a membrane is determined by the rate of transport of individual pumps and the number of pumps in the membrane.
Step-by-step explanation:
The rate at which molecules are actively transported across a membrane is determined by the rate of transport of individual pumps and the number of pumps in the membrane.
This statement is True because active transport is a process that requires energy to move molecules across a membrane against a concentration gradient. The rate of active transport depends on the rate of transport of individual pumps, which are integral membrane proteins that recognize and bind specific solutes for transport, and the number of pumps in the membrane.