chapter 3 review

Question 1

What are the three components of cell theory?

Answer 1

1.mCell is the basic unit of life
2. All living things are made up of cells
3. New cells arise only from pre-existing cells

Question 2

What does an SEM (scanning electron microscope) microscope use to view an image or a specimen?

Answer 2

Uses a beam of electrons to view surface structures of specimens

Question 3

What does a compound light microscope use to view an image or a specimen?

Answer 3

Uses glass lenses and light beams to view images

Question 4

What are the five ways a substance can cross the plasma membrane?

Answer 4

Facilitated Diffusion
Simple diffusion
Osmosis
Endocytosis
exocytosis

Question 5

What are the two main categories that cells are classified in?

Answer 5

Prokaryotes and Eukaryotes

Question 6

What does the rough endoplasmic reticulum do?

Answer 6

make proteins