Objec&ves:
•  Todaywewill…
–  DebriefOsmosis&DiffusionLab
–  Whiteboardprac&ce
–  Q&ATime
–  FridayQuiz!
•  Sothatwecan…
–  DefineHypertonic,Hypotonic,Isotonic
–  Predicthowwaterandothersubstanceswillflow
acrossthecellmembrane
BellWork:
•  Pleasetakeoutlastnight’sHW.Addittoyour
stampsheet(“HW–Prac&cefortypesofcells&
organellesquiz.”)Iwillbearoundtocheckit.
•  1stPeriod:Pleasealsoadd“OrganelleColoring”J
•  IamhandingbackyourCharacteris&csofLifequiz.
PleaseaddthattoyourUnit2Tracker.
EndofUnitReminders:
•  UnitTestforUnit2:TheBuildingBlocksofLifeis
nextweekonblockday(Wed10/5orThurs
10/6.)
•  Thisisalsothelastdaytoturninanymissing/
revisedworkfromUnit2.Acerthisdate,any
“M’s”or“I’s”turnintozeros.
Osmosis&DiffusionLabDebrief:
Discusswithyourpartner:Whatisthenameofeach
molecule?HowaretheirdifferencesinSTRUCTURE
importantforthislab?
A
B
C
D
LabDebrief:
Whichofthesesubstancesdiffusedacrossthe
ar&ficialmembraneusedinyesterday’slab?
A
B
C
D
LabDebrief:
Discuss:Howwereeachofthese
ideasdemonstratedinyesterday’s
lab?
–  Selec&velyPermeable
Membrane
–  Diffusion
–  Osmosis
–  DynamicEquilibrium
Prac&ce:
•  Diffusion:
•  Osmosis:
WhiteboardPrac&ce:
Prac&ce:
Youhaveacell,witha1%
concentra&onofsaltinit.
Youputitintoasolu&onwith
a10%concentra&onofsalt.
Pleasedrawadiagramshowingwhatosmosis
anddiffusionyouwouldexpecttooccur.
Prac&ce:
Youhaveacell,witha5%
concentra&onofcarbondioxide
init.Youputitintoasolu&on
witha3%concentra&onofcarbondioxide.
Pleasedrawadiagramshowingwhatosmosis
&diffusionyouexpecttooccur.
Review:
Whyarediffusion&osmosisimportantforcells?
Prac&ce:
Youhaveacell,witha0.5%calcium
concentra&on.Youputitintoasolu&on
of0.3%calcium.
1.  Pleasedrawadiagramtoshowhowosmosis&
diffusionwouldoccur.
2.  Describethesolu&onashypertonic,hypotonic,
orisotonic.
3.  Whatdoyouexpecttoseehappentothecell?
Prac&ce:
You place a cell that
contains no glucose in
a solution of 5% glucose.
1.  Please draw a diagram to show how osmosis
& diffusion would occur.
2.  Describe the solution as hypertonic,
hypotonic, or isotonic.
3.  What do you expect to see happen to the
cell?
Prac&ce:
You place a cell that
Contains 3% starch
a solution containing no starch.
1.  Please draw a diagram to show how osmosis
& diffusion would occur.
2.  Describe the solution as hypertonic,
hypotonic, or isotonic.
3.  What do you expect to see happen to the
cell?
Q&ATime:
Quiz!
Homework:
•  Osmosis&DiffusionLabaredueMONDAY.
•  UseyourStudyGuidetostartpreparingforthe
Unit2Test!
HonorsExtension:Facilitated&
Ac&veTransport
!
HonorsExtension:Facilitated&
Ac&veTransport
!
1. Passive,
Simple
2 & 3. Passive
Facilitated
4. Active
Facilitated
HonorsExtension:Endo&Exocytosis
Videos:Endo&Exocytosis
•  hlps://www.youtube.com/watch?
v=pvOz4V699gk
•  hlps://www.youtube.com/watch?
v=a4aZE5FQ284
•  hlps://www.youtube.com/watch?
v=U9pvm_4-bHg