Cell Transport

Cell Transport

the process of maintaining homeostasis through the movement of molecules

Cholesterol

A lipid that stabilizes the phospholipids (especially as temp changes) inside the plasma membrane

Passive

high to low concentration, no ATP needed

Solute

dissolved, ex: sugar or salt

Isotonic Solution

same solute in solution vs the cell

Hypotonic Solution

low solute in the solution

Solvent

liquid, ex: water

Solution

solute + solvent = solution

Diffusion

transport of ANY substance DOWN its concentration gradient

Pump

using a specialized (transport or integral) protein to move from low to high concentration

Active

low to high concentration, ATP needed

Primary Pump

moves molecule(s) in one direction (one type of molecule at a time)

Simple Diffusion

no protein needed, small, nonpolar, passive

Facilitated Diffusion

needs a protein, larger, polar, ex: glucose, passive

Osmosis

Diffusion of water through a semi-permeable membrane, passive

Receptor Mediated

molecule binding to the membrane of the vesicle ex: hormone

Exocytosis

process of a vesicle exiting the cell

Hypertonic Solution

higher solute in the solution than the cell

Phospholipid

creates the membrane, is the main barrier decides what to take in and let out

Endocytosis

the process of a vesicle entering the cell

Pinocytosis

to take in liquids within the vesicle ex: water

Phagocytosis

to take in a large molecule within the vesicle ex: protein

Glycoprotein

cell name tag for protein and tells if cell is healthy, made of a sugar + protein

Secondary Pump

the molecules will move in opposite directions at the same time - or the same direction but different molecules

Vesicle

move something big or a lot at one time

Integral Protein

enzymes, transport, and relays messages

Glycolipid

cell name tag for lipid and tells if cell is healthy, made of a sugar + lipid