Cell Processes Notes
Cells carry on many processes on order to stay alive and keep an organism healthy. Four very important processes are
described below.
DIFFUSION
 The movement of materials from an area of __________ ______________________________ (many particles)
to an area of __________________________________ __________________________________ (few particles).
 Molecules will move until there is an ____________________________________________ amount everywhere.
This is called ________________________________________________________________________________
 In a cell, particles move from the blood stream ( ________________________ concentration) into the
_______________ ( ______________________________ concentration). The particles move through the
_________________________________ ________________________________________________________
OSMOSIS
 Diffusion of _________________________________________________________________________________
o If particles cannot move through the __________________________ _________________________, then the
_____________________________ will move until the inside and outside of the cell are
___________________________________________________________.
o Water always goes from the area of ________________ _______________________________ concentration
to the area of lower water concentration. Confused? Then imagine the particles (or solute) are salt and
follow the rule - SALT SUCKS!
Cell membranes are ___________________ _________________________________________________. This means
that they only let certain substances in and out.
PHOTOSYNTHESIS



A process by which plants convert __________________, ____________________________ and
__________________________into _________________________ and _________________________
Occurs in the _______________________________________________________________________.
Only _______________________________________________ cells can do this.
Photosynthesis Equation
H2 0 +
_____________
CO2 +
light 
_______ _______ ___________
O2 +
________
C6H12O6
________ (
)
RESPIRATION





Animals & Plants Rely On Each Other!!
Animals use:_____________________ and _________________________(from producers/plants)
Plants use: ____________________________________________ ____________ (from animals)
The ___________________________ change the O2 and sugars (food) into CO2, H2O, and _______
______________________ cells do this.
O2 +
C6H12O6
 Comparing
_______
______Equations:
(

)
H2 0 +
________
CO2 +
______ ________

Photosynthesis Equation: H2O + CO2 + light  O2 + C6H12O6

Respiration Equation: O2 + glucose  H2O + CO2 + ATP

What do you notice about the two? *They are ______________ of each other!
ATP
________