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Biology 10
C.2
C.2.2 - cell membrane
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Cards (6)
Phospholipid bilayer
Hydrophilic
head
group - water
loving
, dissolves easily
Hydrophobic
tail
group - water
fearing
, doesn’t dissolve easily, hides on inside to shield from water
Glycoproteins -
transport
mechanism
for cell, act as
hormones
Cell membrane functions
Maintain equilibrium
Facilitates
materials
passing
through
cell
Protect
cell from invaders
Hold
cell together
Communicate
with other cells
Fluid mosaic
model
- all parts of the cell membrane (although still looking) are always moving
Semi-permeable
- some materials can cross, others can’t
Particle model of matter
All
things
are made up of
particles
Particles are always
moving
There are
spaces
between particles
Particles are
attracted
to each other