Download Transport Across the Membrane Notes

Cell Transport – notes
The Cell Membrane
________________________ what enters and leaves the cell
________________________ structure and support
Most cell membranes are made of a double layered sheet called a phospholipid
bilayer.
A semi permeable membrane means that some substance can pass across the
membrane and others cannot. The ________________________is a semipermeable membrane
Protein
Cell
membrane
Carbohydrate
Tags
Protein
Solutions
The Cell does not Use
Energy in Passive
Transport!
Lipid bilayer
A ________________________ is a liquid mixture of two or more substances
that are evenly mixed.
The dissolved substance is called the ________________________
A ________________________dissolves a solute
Solvent + Solute = Solution
Examples: Salt water, sugar water,
________________________: Transport across the cell membrane that does
not require energy.
________________________ is the tendency of molecules to move from an
area of high concentration to an area of low concentration.
2 types of Passive
Transport:
1. Diffusion
2. Osmosis
When the concentration of a solute is the same through out a solution, the
system has met ________________________.
________________________ is the diffusion of _____________________
through a selectively permeable membrane.
Hypotonic: The solution has a ____________________concentration of
water than the concentration of water inside the cell therefore water will
____________________ the cell and the cell increases in size.
Isotonic: The solution has an ______________________ concentration
compared to the inside of the cell therefore no water would move in or out and
the cell would remain the ______________________ size and shape.
Hypertonic: The solution the cell is in is _______________________
concentrated than the concentration of the water inside the cell therefore water
would ________________________ the cell and the cell would shrink
The Cell Uses Energy
in Active Transport!
Two Types of Active
Transport:
1. Endocytosis
2. Exocytosis
Active Transport - Material moves from an area of _________________
concentration to an area of ____________________ concentration in a
process called active transport.
________________________is the movement across the cell membrane that
requires energy in the form of ATP.
________________________- the process of taking in material into the cell
by means of infoldings, or pockets, of the cell membrane.
________________________- is the removal of large amounts of material
from the cell by vesicles.