How have DNA, ATP and protein replaced RNA in more complex biological systems

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet