Transcript FLASH CARD REVIEW: Cell Membrane Transport

FLASH CARD
REVIEW:
Cell Membrane
Transport
What is the Cell
Membrane
composed of?
• Phospholipid Bilayer
• Proteins embedded
What is the
Function of the
Cell Membrane?
• Control movement in + out of cell
• Protection
Where is the
Cell Membrane
on Cells?
•The outer covering!
What is a Cell
Wall in Plants
composed of?
•Cellulose
What is the
Function of the
Cell Wall?
• Extra Structure
• Extra Protection
Where is the
Cell Wall on
Cells?
• The very outside!
• Outside & Around the Cell
Membrane!
What types of
organisms have
Cells Walls?
• Plants
• Some Bacteria
• Fungi
What is
Diffusion?
• The movement of particles
(across a concentration gradient)
from an area of HIGH to LOW
concentration!
What is
Osmosis?
• The movement of water particles
(across a concentration gradient)
from an area of HIGH water (low
solute) concentration, to an area
of LOW water (high solute)
concentration.
During Diffusion &
Osmosis, will particles
ALL move to ONE
side?
• No.
• Particles want to be evenly
spread out.
• Want to reach equilibrium.
Some of your cells
are immersed in a
hypertonic solution.
What will happen?
• They will shrink + shrivel.
• Water will rush out.
Some of your cells
are immersed in a
hypotonic solution.
What will happen?
• They will swell + burst.
• Water will rush into the cells.
A saltwater organism
is placed in a
hypotonic solution.
What will happen?
• Its cells will swell + burst.
• Water will rush into its cells.
What is a solute?
• The solid stuff you mix with
liquid.
What is a solvent?
•The liquid stuff.
What does it mean to
say that the Cell
Membrane is SemiPermeable?
• Only certain substances can
diffuse in and out of the
membrane.
What is the name for
the type of membrane
transport which
requires ENERGY?!
• Active Transport
What are 2 types
of Passive
Transport?
• Diffusion
• Osmosis