The of the cell directs cell activity and acts like the control center
a. nucleolus
b. ribosome
c. nucleus
d. mitochondrion

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

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.

Whats one way that rocks do not follow the typical rock cycle pathway?