Flashcards
AP Bio test chapter 5
Cards in this deck (7)
- 1Simple diffusionSmall uncharged nonpolar molecules (h2o, co2, 02, small lipids)
- 2Facilitated diffusionIons and polar molecules pass through semipermeable membrane with help of specific proteins
- 3OsmosisDiffusion of water
-aquaporins - 4Active transport-requires energy
-endocytosis and exocytosis change shape of membrane - 5Cholesterol on membranePrevents membrane from becoming too fluid
- 6Carbohydrate chain on membraneActs as cell identification tags
- 7Functions of Membrane proteins (6)•transport (passive/active)
•enzymatic activity
•attachment to cytoskeleton and extra cellular membrane
•cell to cell recognition
•intercellular joining
•signal transduction