Membrane Transport Flashcards
In facilitated diffusion, molecules use a ————- to move across the plasma membran
transport protein
What is the fluid mosaic made out of?
Lipids
What are some of the functions of a membrane?
Isolate cell contents, regulate exchanges, create attachments, regulate chemical reactions
What is a solute?
The substance that disolves
What is a solution?
Where solute and solvent meet
What is the gradient?
The flow of solute
What is a hypotonic solution?
Where solutes are less
What is an isotonic solution?
Where there is the same quantity of a solute and a solvent
What is a hypertonic solution?
There is more solute than solvent
What is the main characteristic of passive transport?
No energy is required
What are the three types of passive transport?
Simple diffusion, osmosis & facilitated diffusion
Simple diffusion is mainly used for…?
Gases
Osmosis is used for…?
Water
Facilitated diffusion is used for…?
Specific molecules
What is the main characteristic of active transport?
It requires energy
