POB ch 3

Question 1

what are the parts of the cell theory?

Answer 1

1. all organisms are composed of one or more cells
2. cells are the basic units of structure and function in organisms
3. all cells come only from other cells

Question 2

what does cell size have to do with anything?

Answer 2

SMALLER cells have a larger surface area to volume ratio, create more reactions

Question 3

what do all cells have ?

Answer 3

1. DNA
2. Cytoplasm
3. Plasma Membrane
4. Ribosome
   (Dude, CPR)

Question 4

Describe the Endosymbiotic Theory

Answer 4

Mitochondria and Chloroplasts derived from prokaryotes that were taken up by a larger cell

• mitochondria were originally heterotrophic bacteria
• chloroplasts were originally cyanobacteria
• after entering the host cell, the bacteria and host began living together cooperatively

Question 5

what domains are closest to each tother?

Answer 5

Archaea and Eukaryote