Thurs Nov 3/Fri Nov 4

Transcription

1 Thurs Nov 3/Fri Nov Quiz next Tuesday nov 8! (PER 2 & 3 YOU WILL BE AT REALITY TOWN!) Starter: No starter today! Read introduction for part A of the lab!

2 Diffusion and Osmosis Lab Diffusion: Osmosis:

3 WEDNESDAY November 2 ND 3.1 Tutoring on TODAY after school! 3.2 Quiz today! 3.4 Quiz next Tuesday nov 8! (PER 2 & 3 YOU WILL BE AT REALITY TOWN!) Starter: OBSERVE THE ZIPLOCK FROM OUR SEMI-PERMEABLE MEMBRANE & DIFFUSION DEMO YESTERDAY. DESCRIBE OR DIAGRAM WHAT HAPPENED. EXPLAIN!

4 WEDNESDAY November 2 ND KI Cornstarch Turned purple

5 Tuesday November 1 st 3.1 Tutoring on Wednesday after school! 3.2 Quiz tomorrow! 3.4 Quiz next Tuesday nov 8! Starter: Outside of Cell (Water) Describe why the Phospholipid bilayer Looks like this Inside of Cell (Water)

6 3.2 Cell membrane Structure Transport Channel Proteins -Tubes that create openings through the membrane -Allow large and/or charged molecules through Other Membrane Proteins -Only on inner or outer surface -Enzymes for chemical reactions on inside or outside of cell Glycoproteins Cholesterol Cytoskeleton -Made up of carbohydrates & Proteins -Used for cell-to-cell communication -Type of lipid throughout bilayer -Helps membrane stay fluid/flexible -Stabilizes membrane Network of proteins to give cell membrane shape & structure

7 Ziplock Cell Membrane Iodine + Starch = Purple/Black

8 Ziplock Cell Membrane Outside of bag Water + KI (Potassium Iodide) K-I Possibilities: K-I Outside turns purple Outside turns purple - K-I Outside stays orange Inside of bag Water + Cornstarch Inside turns Purple Cornstarch Cornstarch Inside turns purple Inside stays white

9 Standard Objectives: I can compare and contrast active and passive transport across the cell membrane I can illustrate and describe the processes of diffusion and osmosis across the cell membrane I can describe how cell transport across the membrane allows cells to maintain homeostasis

10 Solute Concentration Concentration Amount of solute molecules compared to amount of solvent molecules in a solution Solute Solvent

11 Solvent Concentration Concentration Solvent Amount of solvent molecules compared to amount of solute molecules in a solution Solute

12 Concentration Gradient The different solute concentrations throughout a solution

13 High Solute Concentration Low solute Concentration No energy required Energy Required

14 Passive vs. Active Transport Across the Membrane Passive Transport: Does not require Energy Passive movement across the membrane Solutes move from high to low concentration

15 Passive vs. Active Transport Across the Membrane Active Transport: Requires Energy Active movement across the membrane Solutes move from Low to High concentration

16 Types of Passive Transport Passive Diffusion: Movement of smaller, uncharged molecules from high to low concentration

17 Monday November 7 Tomorrow: 3.4 Quiz tomorrow! (PER 2 & 3 YOU WILL BE AT REALITY TOWN!) Finish 3.3 notes (active transport) ppt posted under daily agenda! Lab 7 due (same goes for per 2 &3) 3.3 quiz next week (mon or tues) Starter:

18 Standard Objectives: I can compare and contrast active and passive transport across the cell membrane I can illustrate and describe the processes of diffusion and osmosis across the cell membrane I can describe how cell transport across the membrane allows cells to maintain homeostasis

19 Passive Diffusion: 3.3 Cellular Transport Types of Passive Transport

20 Passive Transport Review Active Transport High to low No energy! Low to high Needs energy!

21 Types of Passive Transport Facilitated Diffusion: Still high to low! Large and/or charged molecules move through protein channels

22 Types of Passive Transport Osmosis: Facilitated diffusion of water Water diffuses from high to low solvent concentration Low solvent conc = high solute conc! Water follows salt salt sucks!

23 osmosis Solute solvent High Solute Low solvent Water moves to higher solute! High Solvent Low solute **Note: this solute can t diffuse! But water can!** Water moves to higher solute! High Solvent Low solute High Solute Low solvent

24 Three types of solutions Cells can be in three different types of solutions Solute lower than amount inside cell Solute equal to amount inside cell Solute higher than amount inside cell

25 tuesday November 8 Starter: 3.4 Quiz today! Lab 7 due today! 3.3 quiz next week (mon or tues) No starter today

26 Standard Objectives: I can compare and contrast active and passive transport across the cell membrane I can illustrate and describe the processes of diffusion and osmosis across the cell membrane I can describe how cell transport across the membrane allows cells to maintain homeostasis

27 Three types of solutions Hyp0tonic solution: Solute amount outside cell is lower than amount inside cell Water diffuses into causing cell to swell Water moves in to higher solute! Salt sucks

28 Three types of solutions Hyp0tonic solution: Water moves in to higher solute! animal cell plant cell Salt sucks

29 Three types of solutions isotonic solution: Solute amount outside cell is equal to amount inside cell Water diffuses in and out of cell at equal rates Salt sucks

30 Three types of solutions isotonic solution: animal cell plant cell Salt sucks

31 Three types of solutions Hypertonic solution: Solute amount outside cell is higher than amount inside cell Water diffuses out of causing cell to shrink/shrivel Salt sucks Water moves out to higher solute!

32 Three types of solutions Hypertonic solution: animal cell plant cell Salt sucks Water moves out to higher solute!

33 Reminder Types of active Transport Low to high Needs energy!

34 Protein Pumps 3.3 Cellular Transport Membrane proteins that use energy to pump solutes against conc. gradient Types of active Transport low solute High solute

35 Types of active Transport Large Scale Membrane Movement Exocytosis Exo = exit or leave; cyto = cell Large amounts of material are released from cell

36 Types of active Transport Large Scale Membrane Movement Endocytosis Endo = enter; cyto = cell Large amounts of material are engulfed or brought into the cell

37 Types of active Transport Exocytosis Video Endocytosis video

38 Cellular transport and homeostasis Homeo = same stasis = state Ongoing process of Cell transport working to keep inside of cell the same, despite changes on the outside Aka keep inside of cell in the same state Maintain concentration gradients Bring in nutrients and release wastes Water diffuses into cell equal solute equal solvent Balance!