We started today’s class by handing in our homework. We turned in our color codes and got stamps for our definition maps and prelab. We then setup our labs by putting glucose solution into our “sausages”, tying it off then putting it in a beaker with 200ml of water and some iodine. While we let them sit in the water we went back to our seats and took some notes and talked about the lab. After that we went back over to see what happened to our “sausages” and answered the lab questions.
Notes
Cell (plasma) membrane:
Selectively permeable - regulates what enters and exits the cell
Lipid bilayer (2 layers of lipids)
Mosaic model - contains many types of proteins, pumps, channels and receptors
Diffusion:
particles move from areas of high concentration to low concentration
particles move until equilibrium is reached
particles move passively - no energy (ATP) required
Osmosis:
diffusion of water through a selectively permeable membrane
Homework:
finish lab (UP page's 34-35)
extra credit
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