Chapter #6 TRANSPORT NOTES. TRANSPORT is the INTAKE and DISTRIBUTION of materials throughout an organism. Transport occurs 1. Across membranes of cells 2. Within the cell itself called CYCLOSIS 3. Between parts of Multicellular Organisms .
TRANSPORT is the INTAKE and DISTRIBUTION
of materials throughout an organism.
Transport occurs 1. Across membranes of cells
2. Within the cell itself called CYCLOSIS
3. Between parts of Multicellular Organisms
The cell membrane consists of two layers of lipid molecules
where protein molecules are embedded in the lipid bilayer
Regulates the movements of materials that enter
and exit the cell.
Also know assemi-permeable, selectively permeable
Characteristics that allow materials to move
through the membrane
Size and Electrical Charge of Molecules
Passive Transport: no energy (ATP) required to move
materials through the membrane
Active Transport: the cell supplies energy (ATP) to
move materials through the membrane
These ideas are based on the concept of moving
materials across cell membranes
From an area of __HIGH____concentration to
an area of _____LOW_______ concentration.
2. Osmosis: the diffusion of water through a membrane.
on each side of the membrane is called Concentration
Molecules pass from a region of ____LOW______
concentration to a region of _____HIGH_______
THIS REQUIRES ENERGY…ATP
or very small dissolved particles.
Occurs by the formation of POCKETS by the cell
Membrane called a PINOCYTIC VESICLE. Large
molecules are transported across the cell membrane.
matter. Most unicellular organisms (ameba)
See video next page
CIRCULATION is the transport of materials within
cells or between parts of a multicellular organism.
1. CYCLOSIS the streaming movement
See video next page
3.Use of the ENDOPLASMIC RETICULUM
PLASMOLYSIS the shrinking of the cell membrane
due to outward movement of water
Answer: TYPES OF SOLUTIONS
This results in no net movement of water
into or out of cells.
This results, in a net movement of water
out of cells.
This results in a net movement of water