Membranes Flashcards
Which region of phospholipid is polar?
Head
List six functions of the membrane protein
Hormone binding sites, enzymatic action, cell adhesion, cell to cell communication, channels for passive transport, pumps for active transport
What does hydrophilic mean?
Likes water
What does hydrophobic mean?
Repels water
What do glycoproteins do?
Combine with carbohydrates to make chemical receptors
What does the cholesterol do?
Affects membrane depending fluidly on it’s different temp.
What’s a hydrophobic?
Tails
What’s diffusion?
Passive net moment of particles from areas of high concentration to low
What is osmosis?
Movement of water low concentration to areas opposite of diffusion
How do you maximize the rate of diffusion?
Consecration gradient, surface area, length of diffusion
Define vesicles
Protects contents as they travel thought the reactive cytoplasm
Distinguish between exocytosis and endocytosis
Endo… Allows macromolecules to enter the cell while Exocytosis allow molecules to leave
Saturated equals
Single.. At least 1 double bound
6 functions of the plasma membrane
Hold the cell together, controls why goes in/out, protect the cell, allow cell to recognize& be recognized, bind to the other cells and molecules, a site for biochemical reactions
