Question

fill in the blank question
transport that requires a cell to expend some of its own energy, typically from □, is called □ transport.

Explanation:

In cellular biology, the energy source for active transport (transport that needs the cell to use its own energy) is typically adenosine triphosphate (ATP). Active transport is the type of transport that requires the cell to expend energy, as opposed to passive transport which does not. So the first blank should be filled with "ATP (adenosine triphosphate)" and the second with "active".

Answer:

First blank: ATP (adenosine triphosphate)
Second blank: active