Bio chapter 7 Deck 6 Slides 17- 20)

Cell boundaries include cell ____s and cell_____s

The job of the cell membrane is to ______ what enters and leaves the cell This means it is selectively ______

The cell membrane is a double - layered sheet called a ______

Embedded in the lipid bilayer are ___S

The proteins in the lipid bilayer form ___S and pumps to get things in and out of the cell

In the cell membrane carbohydrates are ___ed to some of the proteins The carbohydrates act like CHEMICAL ID CARDS allowing cells to identify each other

___ TRANSPORT is a way materials move through cell membranes that does NOT require energy

There are three forms of PASSIVE TRANSPORT through the cell membrane:

___Is the movement of a substance from an area of high concentration to an area of low concentration

Diffusion continues until a state of___ is reached (equal amounts of substance on each side of the cell membrane)

___Is the diffusion of water across a membrane

In___ Solutions the same concentrations of water are on each side of the membrane (“same strength“)

In___ Solutions there is a HIGH amount of solute, LOW amount of water (“above strength) A CONCENTRATED solution

In___ Solutions there is a low amount of solute, high amount of water. (“BELOW strength “) A DILUTE solution

Water always flows from a ___ solution ( MORE water) to a ___ solution ( LESS water) by osmosis until both solutions are ISO tonic (equal amounts of water)