The Cell Flashcards
What is the plasma membrane made of?
phospholipid bilayer and proteins
what are integral proteins?
channels that pass through the cell membrane
What are the function of integral proteins?
let stuff in
what are peripheral proteins?
they attach to the inside or the exterior of the cell
What is the function of peripheral proteins?
Act as ID
What is simple diffuson?
particles moving down the conc. gradient; no ATP required
What substances are moved with simple diffusion?
oxygen, carbon dioxide, lipid soluble vitamins, steroids or nitro.
What is facilitated diffusion?
uses carrier proteins that change shape; no ATP
What does facilitated diffusion transport?
Na+, K+, Cl-
What is active transport?
requires ATP to move up the conc. gradient
Give some examples as to what uses active transport.
Na+, Cl-, I
What is secondary active transport?
movement of substance with something else
what are symporters?
bringing 2 things in
What is antiporting?
something moves in as something moves out
What is endocytosis?
moving into the cell; phagocytosis
