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Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane. 3. Draw a simple sketch of diffusion across a semi- permeable membrane.
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Page 1: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

WarmUp(8/24-8/25)

1.  Whatisthedifferencebetweenasoluteandasolvent?

2.  Describethefunctionoftransportproteinsinthecellmembrane.

3.  Drawasimplesketchofdiffusionacrossasemi-permeablemembrane.

Page 2: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

ThinkBack–Diffusion•  Inasolution,moleculesmoverapidly.

•  WhatisDiffusion?

•  Diffusioncausesmanysubstancestomoveacrossacellmembranebutdoesnotrequirethecelltouseenergy.

Page 3: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Agenda

•  Warmup•  8.1Notes:CellularTransport•  Worksheetsandcolorings•  QuickQuiz

HomeworkdueWed/Thurs:•  8.1SectionAssessment(#s1-5,pg200)

Page 4: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

ThinkBack–CellMembrane

Inside of cell- cytoplasm

Proteins

Outside of cell

Lipid bilayer

Page 5: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Passivevs.ActiveTransportofMoleculesAcrossthePlasmaMembrane

•  Passivetransport:Cellusesnoenergy(movesmoleculeswithconcentrationgradient)

•  Activetransport:Cellusesenergy(movesmoleculesagainstconcentrationgradient)

Page 6: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

FacilitatedDiffusion

•  FacilitatedDiffusion:Movementofspecificmoleculesacrosscellmembranesthroughproteinchannels.

•  Doesnotrequireenergy.Moveswithconcentrationgradient.

Page 7: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Osmosis

•  Osmosis:thediffusionofwaterthroughaselectivelypermeablemembranefromhightolowbasedonthesoluteconcentration.– Formofpassivetransport

•  Watermovestowardsthehigherconcentrationofsoluteuntilequilibriumisreachedonbothsidesofthemembrane.

Page 8: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Osmosis

https://youtu.be/sPgmVyJGGEE

Page 9: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

ActiveTransport•  ActiveTransport:Energy-requiringprocessthatmovesmaterialsacrossacellmembraneagainstaconcentrationgradient.

•  Requiresenergy.

Page 10: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Endocytosis&Exocytosis

**Bothinvolvemovingmassesofmaterial=requireenergy**•  Endocytosis:cellsurroundsandtakesinmaterialfromits

environment•  Exocytosis:Expulsionorsecretionofmaterialsfromacell

Page 11: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Review

https://youtu.be/ufCiGz75DAk

Page 12: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Completeworksheet

Page 13: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

ThreeTypesofSolutions

•  IsotonicSolution

•  HypotonicSolution

•  HypertonicSolution

Page 14: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

IsotonicSolution

Concentrationofdissolvedsubstancesinthesolutionisthesameastheconcentrationofdissolvedsubstancesinsidethecell.

Page 15: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

HypotonicSolution

Concentrationofdissolvedsubstancesislowerinthesolutionoutsidethecellthantheconcentrationinsidethecell.

Page 16: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

HypertonicSolution

Concentrationofdissolvedsubstancesoutsidethecellishigherthantheconcentrationinsidethecell.

Page 17: Warm Up(8/24- 8/25) · Warm Up(8/24- 8/25) 1. What is the difference between a solute and a solvent? 2. Describe the function of transport proteins in the cell membrane.

Completeworksheet


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