Prokaryote and Passive Transport Review Answers
1. False: animal cells don’t have cell walls and bacteria do!
2. True
3. Eubacteria and Archaebacteria
4. Archaebacteria
5. Nucleus (pro = no!)
6. Bacilli = rod-like shape, cocci = shere-like shape, spirilla = spiral-like shape
7. Diplo= pairs, Strepto= chain, staphylo= clumps
13. Photoautotrophs use light from the sun to make their own food.
16. Using energy from chemicals to make sugars(food)
17. Mutualisim = BOTH benefit
18. Homeostasis = a steady-state, equilibrium
19. Cell membrane = a semi-permeable, lipid bi-layer
22. Diffusion= movement of molecules from a high concentration to a low concentration
23. Osmosis = the diffusion of water
24. Hypertonic = there is more salt/sugar in the solution than in the cell so water will move OUT of the
cell = cell shrivels. Hypotonic = there is less salt/sugar in the solution than in the cell so water will INTO
the cell = cell bursts. Isotonic = equal amounts of salt/sugar so water moves in and out of cell equally =
cell stays the same
25. 2 molecules of water need to move to side A there would be an equal amount of 9 water molecules
on both sides. 2 sugar molecules would move to side B so there would be an equal amount of 6 sugar
molecules on both sides.
26. Bacteria need food, moisture, and warmth to grow.
27. True
28.