Download STUDY GUIDE OFR HOMEOSTASIS TEST

STUDY GUIDE FOR HOMEOSTASIS TEST
1.
a membrane that lets only certain things in and out
2.
a molecule with a slight charge on either end; water is an example;
molecules that are soluble in water
a molecule with no charge; a lipid is one example; molecules that
are not soluble in water
two layers of phospholipids arranged so that the polar heads are
touching water and the non polar tails are in the center of the layer;
the cell membrane is this
movement of molecules through the cell membrane that requires
the use of energy
movement of molecules through the cell membrane that does not
require the use of energy
a type of cell membrane protein that acts as a gate through which
only certain molecules can pass
a type of cell membrane protein that transmits information into the
cell by reacting to certain molecules (hormones) outside the cell
a type of cell membrane protein that acts as a name tag for the cell
3.
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12.
The movement of molecules from areas of high concentration to
low concentration
the movement of water molecules from areas of high concentration
to low concentration
the movement of large molecules into the cell using energy
13.
the movement of large molecules out of the cell using energy
14.
the pressure of water inside a plant cell
15.
loss of turgor pressure inside a plant cell; causes wilting
16.
the substance that something else is dissolved in
17.
the substance that is dissolved in a solvent
18.
The two basic types of cell transport
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The two basic types of passive transport
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The two basic types of active transport
23.
24.
The type of bond that causes water molecules to be attracted to
each other
25.
The part of the phospholipid that touches water
26.
The part of the phospholipid that “hates” water
Draw a small portion of the cell membrane and label the following parts: polar head, nonpolar tail, outside
of cell, inside of cell
Draw a cell in a beaker. The inside of the cell has 4% solute and the solution outside the cell has 10%
solute. Draw an arrow to indicate which direction the water will move.
A special beaker is divided in half by a semipermeable membrane. One half has a solution with 99% water.
The other half has a solution with 8% solute. Draw this scenario and indicate with an arrow which
direction the water will go.