7. At what level of organization does life begin? 8. What surrounds all cells?
9. What does semipermeable mean?
10. What 2 things make up the cell membrane?
a.
Anin
b.
Centole
11. The cell membrane is also called
the
membrane.
17.
12. What additional layer is found
around the outside of plant, fungal,
and bacterial cells, but NOT around
animal cells?
Qytostoel
13. Centrioles are found at the center
of the
14. How do they help the cell?