Open your journals to the Red Onion Lab
What type of solution is the salt water? Hypertonic
What type of solution is the distilled water? Hypotonic
Cell Membrane
Which cell structure was expanding /shrinking in response to the different solutions?
When you soaked the onion cells in saltwater, what happened to them. Shrunk
What type of passive transport is this lab illustrating? Osmosis
– Does passive transport require energy?
No!
What is the difference between
passive transport and active transport?
• Bacteria
• Prokaryotic
• Have DNA, Cell Wall, but no membrane
organelles!!!!
Ribosome
Site of protein synthesisAll Cells Pro and Euk have
these!!!!!
• Animal
• Eukaryotic
Objective
Total Magnification = Eyepiece X __________
Osmosis is…….
The movement of…..
WATER
• Plant
• Eukaryotic
Levels of Organization
Cells
Organelles _______
Tissues 
Organ Systems
Organs  ____________Organism
Function of…..
Stores Genetic Information
NUCLEIC ACIDS
Nucleus
Storage of
Genetic
Material
Mitochondria
Produces energy
(ATP)
The Nucleus is
surrounded by:
Nuclear
Membrane
Vacuole
Plants have a
bigger one!
Cell Membrane
Maintains
Homeostasis
The main component of the cell
membrane…
PhosphoLIPIDS
Diffusion and Osmosis normally
from areas of ___________
concentration to areas of _________
concentration
HIGH  LOW
Because its easy!
These molecules are…..
NUCLEIC ACIDS
What type of diffusion?
Simple
Facilitated Diffusion
Red Onion Slides:
What molecules are moving? Through
what process
Water
Osmosis
Normal Cells
HYPERTONIC
In salt water
Red Onion Slides:
What tonicity? WHY??
In salt water
Normal Cells
HYPERTONIC
Chloroplasts
Converts sunlight energy into
chemical energy (glucose)
Glycerol and fatty acids are the
monomers of…..
LIPIDS