Cellular Transport Ch 7 1 Cell Transport Plasma

  • Slides: 11
Download presentation
Cellular Transport Ch. 7 1

Cellular Transport Ch. 7 1

Cell Transport Plasma Membrane ________ - selects which molecules are permitted in or out

Cell Transport Plasma Membrane ________ - selects which molecules are permitted in or out of the cell to maintain homeostasis (balance). 2

The Fluid Mosaic Model 1) _______ is made up of flexible _________. 2) each

The Fluid Mosaic Model 1) _______ is made up of flexible _________. 2) each phospholipid has a _____ (waterloving) head and _____ (water-fearing) tail. 3) Some _____ are embedded within the phospholipids. 3

Phospholipid • ______ head (hydrophilic) • ____ tail (hydrophobic) • This property creates the

Phospholipid • ______ head (hydrophilic) • ____ tail (hydrophobic) • This property creates the lipid bilayer. 4

Fluid Mosaic Model • _____ – stabilizes the membrane. -B/c of its bulkiness, it

Fluid Mosaic Model • _____ – stabilizes the membrane. -B/c of its bulkiness, it prevents phospholipids from moving too fast at ______ temp (or from high fluidity). -At ______ temp, it prevents phospholipids from sticking to each other (or from rigidity) 5

_______Transport vs. ______ Transport ________Transport - does not use ____; materials move from _____concentration

_______Transport vs. ______ Transport ________Transport - does not use ____; materials move from _____concentration to_____concentration 1) ______ –substances move from [high] to [low] a. ______ – diffusion of _____ thru a selectively permeable membrane 2) ________ – diffusion with the aid of proteins ________Transport -uses _____; materials move from _____ concentration to _____ concentration (ex: Na-K pump) 1) requires________. 2) _______ - cell membrane engulfs and transports large fluid or food particles INTO the cell 3) _______- cell membrane pinches off to transport large waste particles OUT of the cell 6

Passive vs. Active Transport 7

Passive vs. Active Transport 7

Endocytosis vs. Exocytosis 8

Endocytosis vs. Exocytosis 8

Osmosis (diffusion of water) 9

Osmosis (diffusion of water) 9

Osmosis • _____ solution -____ conc. inside the cell as outside -_______ amount of

Osmosis • _____ solution -____ conc. inside the cell as outside -_______ amount of water goes in & out of the cell • _____solution -_____ conc. outside the cell -more water ____ so cells _______. • _____solution -_____ conc. outside the cell -more water _______ so cells ____. 10

Osmosis 11

Osmosis 11