Question

2. Which type of microscope can produce three-dimensional images of a cell’s surface? (1 point)
transmission electron microscope
scanning electron microscope
dissecting microscope
compound light microscope
3. Which of the following distinguishes a prokaryotic cell from a eukaryotic cell? (1 point)
the presence of a nucleus
the presence of a cell membrane
the ability to interact with the environment
the ability to reproduce

Answer 1

Medal/fan !

Answer 2

2. electron scanning microscope
3. Prokaryotes:
-are unicellular
-have single circular DNA
-divide by binary fission
-lack membrane-bound organelles

Eukaryotes:
-can be unicellular or mulitcellular
-have linear chromosomes that are usually many
-divide by mitosis
-have membrane-bound organelles (nucleus, lysosomes...)