1. Review Water Potential via
text Q (stamped)
practice worksheet (key uploaded)
2. Moving on: Eukaryotic organelles
HW: Vocab: definitions or assertions for quiz next class
Check yourself online: Mader quiz or problem set(?)
Prep organelle presentation
Review DNA design (3.5)
Notes on DNA history (14.1-14.3, also
Bozeman DNA 1 )
1. Potato osmosis lab deconstructed
2. PPT'sv: WP: So What?
Beyond passive transport
3. At Lab: Tend to Fast Plants
Water potential worksheet
Organelle presentations discussed
Plamolysis in Anacharis
HW: Wrap up Osmosis labwork for a stamp
Text review Q due next class
Vocab/WP Quiz on Friday
Organelle notes/presentation work
1. My answer Tuesday that hypertonic and hyperosmotic are synonymous is in fact correct. Used here, hyper- means lots of solute. See below from Biology Online.
Hypertonic - Of or pertaining to a solution (e.g. extracelllular fluid) with higher solute concentration compared with another.
Hyperosmotic - A condition in which the total amount of solutes in a solution is greater than that of another solution.
2. In my water potential ppt slides a change in slide 2 from water potential to water concentration is a more correct statement.
3. I think explaining diffusion in the context of free energy makes the topic more complex. But if it helps you understand water potential, go with it. There are a few q on the practice worksheet that ask you to consider free energy.
4. I found hyper/hypotonic, concetration, and osmotic pressure used on released AP test q, but not hyper/hyposmotic.
1. PPT: Water potential
2. Osmosis lab discussed/results calculations & graphed
3. Uncover & water your Fast Plants F1.
4? Plasmolysis in Anacharis
HW: Lots to work on:
• Chapter review Q (posted 1/17 and uploaded to unit page for 6e text holders) - due by Wednesday
• Water potential worksheet I had available last week (uploaded) - try it; bring it Monday
• Organelle presentations starting Wednesday - come Monday with research, notes, ideas
• Vocab quiz Friday (matching), so define the unit vocab
Come by class Wednesday (lunch, after 4th are best) to prepare your potato cores.
Consider using the comment feature on this page to ask questions of other AP Bio students, and to answer questions your classmates have.
1. Quiz: Cells, Membranes and Diffusion
2. Artificial Selection Lab: Set up F1 to germinate, grow
3. Osmosis lab: set up all but potato cores
4. Group organelle project assignments
HW: Use online osmosis lab(s) for clarification, if needed
View my ppt on water potential; take notes
Organelles are introduced in 5.3. Start learning your particular set. You'll eventually need notes on all of them - either from the text, or from your classmates presentations.
1. Lab Results shared/discussed
2. PPT: Diffusion
HW: 6.3 - 6.5 text notes no later than Tuesday
Quiz Tuesday (through 6.5) - know relevant vocab
Take notes on Water Potential via LabBench link
Pre-Lab, part 3: Osmosis (use Bozeman/LabBench)
Working ahead: Notes: text section 5.3
Text Q assignment: from 5e text
Chapter 5: to #11 except 1, 5, 8
Chapter 6: all except 4, 8-10
1. Stamps: Notes 6.1/6.2
2. AP Lab #4
Lab 1: Agar cells
Lab 2: Cell membrane/diffusion model
HW: Analyze lab results, considering the following:
• in each case, there are multiple concentration gradients: water, and the solute(s): salt, sugar, protein.
• A 1Molar glucose sol'n is not the same as a 1Molar sucrose in terms of the concentration of each in their respective solutions. This in turn affects the concentration gradient for water. To make 1 L of sol'n I used: 342g sucrose; 180g glucose; 58.44g NaCl. The albumin was a 5% percent (not 1M) sol'n; I added 50g to 1L.
terms list available
compare your 5.1 - 6.2 notes to mine
1. Notes reviewed via ppt
2. Cell size, redux
3. AP Lab #4: Diffusion
HW: Read/take notes 6.3-6.5
Bring methods ideas for Diffusion lab (AP #4 part 2)
indicators for glucose, protein are available, as well as scales
Start defining vocab or writing assertions