What does passive transport mean?
Doesn’t require energy.
What does active transport mean?
Requires energy (ATP)
What is the phospholipid bilayer?
The heads and tails: phosphoheads and fatty acid tails
What are the types of passive transport?
What is the type of active transport?
What does hypotonic mean?
What does hypertonic mean?
What does isotonic mean?
What is lysis?
When a cell explodes from too much water.
What is crenation?
When a cell shrivels up from not enough water.
What does turgid mean in a plant cell?
They don’t really lose their shape.
Why are plant cells turgid?
Because of their cell wall.
How does diffusion work?
The passive movement of particles from an area of higher concentration to an area of lower concentration.
What is concentration gradient?
The difference between concentration of two areas.
How does osmosis work?
Molecules of a solvent in a less concentrated solution pass through a semipermeable membrane into a more concentrated solution.
What are channel proteins?
Create channels through which water-soluble particles can move.
What are carrier proteins?
Attach themselves to large molecules and physically move the molecule across the membrane into the cell.
How does facilitated diffusion work?
Diffusion with a protein facilitator. Channel proteins and gate proteins.
What is reverse osmosis?
Water moves from high to low concentration area.