Cell Transport
What are the two kinds of cell transport?
Active Transport and Passive Transport
What is the function of the cell membrane
to control what gets in and what gets out of the cell
Does passive transport go up or down the concentration gradient?
Down
Osmosis is the diffusion of _____ across a semipermeable membrane.
water
What is required in order for active transport to take place
energy (ATP)
What kind of transport does NOT require energy?
Passive Transport
what is the cell membrane made up of
phospholipid bilayer, cholesterol, carbohydrate and protein
3 kinds of passive transport
- Diffusion
- Facilitated Diffusion
- Osmosis
A solution that has the same concentration of solute as the cell is called:
Isotonic
Large molecules LEAVING the cell by vesicles use this process
Exocytosis
What kind of transport DOES require energy?
Active Transport
The head of the lipid is called hydrophylic...what does this mean?
Hydrophilic is atrracted to water
During Passive transport we move molecules from areas of _____ concentration to areas of ____ concentration
High; Low
A solution that has the more concentration of solute as the cell is called:
Hypertonic
During Active transport we move molecules from areas of _____ concentration to areas of ____ concentration
low concentration to high concentration
What controls what enters and leaves the cell?
The Cell Membrane
The tails of the lipid are called hydrophobic...what does this mean?
hydrophobic means repelled by water
What are the three different types of passive transport?
Simple Diffusion, Facilitated Diffusion, Osmosis
A solution that has the less concentration of solute as the cell is called:
The process of TAKING IN large molecules through vesicles.
Endocytosis
What is the term that describes the NUMBER of MOLECULES in a substance in a given area
Concentration
What does the cell membrane being "semipermeable" mean?
Some things are allowed to pass through more easily than others. The cell membrane is "picky"
Movement of water through the cell membrane
Osmosis
What would happen to the cell if it is hypertonic
It shrinks
What are the examples of Active Transport?
- Bulk Transport (Endocytosis and Exocytosis)
- Protein Pump