Which organelle is found in both prokaryotes and eukaryotes? A)mitochondria
B)ribosomes
C)nucleus
D)vacuoles

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.

Adistinctive characteristic of mammals that is not observed in other vertebrates is

The part of the eye that closes and opens to let light in is .