Based on what you know, how would you explain each part of the cell theory?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

What is the main fuel source for the work of the cell