Question

name: nafhiah stevenson
amoeba sisters video questions:
what is cell theory?
all living things have cells
water is polar and therefore enemies with the non polar ______________?
how does water transport through the cell membrane?

Explanation:

1. Cell Theory states that all living organisms are composed of cells, cells are the basic unit of life, and all cells come from pre-existing cells.
2. Water (polar) is incompatible with nonpolar molecules like lipids (e.g., cell membrane fatty acid tails).
3. Water crosses the cell membrane via osmosis (passive diffusion through lipid bilayer gaps) and facilitated diffusion through aquaporin proteins.

Answer:

1. Cell Theory: All living things are made of cells; cells are the basic unit of life; all cells come from pre-existing cells.
2. Water is polar and therefore enemies with the non polar lipids.
3. Water transports through the cell membrane via osmosis (small amounts through the lipid bilayer) and facilitated diffusion through aquaporins.