Duties and Responsibilities of U.S. Citizens Bell Ringer Bell Ringer.
Bell Ringer
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Bell Ringer Challenge: See if you can draw and label the cell membrane with no notes!
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Bell Ringer. Challenge: See if you can draw and label the cell membrane with no notes!. Membrane Transport. Lesson Overview: Observe the incredible eggs Brief PowerPoint on transport Gummy Bear Osmosis Lab Membrane video Murky and Main Points. Incredible Eggs. Diffusion. - PowerPoint PPT Presentation
Transcript of Bell Ringer
Bell RingerChallenge: See if you can draw and
label the cell membrane with no notes!
Lesson Overview:Observe the incredible eggsBrief PowerPoint on transportGummy Bear Osmosis LabMembrane videoMurky and Main Points
Membrane Transport
Incredible Eggs
DiffusionIs a type passive transport
Is the movement of substances from an area of high concentration to low concentration
no energy required
LE 7-11a
Molecules Membrane (cross section)
WATER
Net diffusion Net diffusion Equilibrium
Diffusion of one solute
Solute - a substance dissolved in another substance. Ex: dye molecules in water.
LE 7-11b
Net diffusion Net diffusion Equilibrium
Diffusion of two solutes
Net diffusion Net diffusion Equilibrium
Real life connection: Sickle Cell AnemiaOxygen diffuses in and out of normal blood
cells. Can’t in abnormal shaped cells.
• Estimated 100,000 Americans have sickle cell disease.
• 1 in 12 African Americans have sickle cell trait. • Means that they can
pass the trait to children
OsmosisIs diffusion of water across a membrane
Moves from an area of its high concentration to an area of its low conc.
Is energy required?
OsmosisExample
www.fmhs.uaeu.ac.ae
Water Water & Salt
Water Moves
Water Moves until there is the same
# of water molecules on each
side
Osmosis TermsHypertonic
solution with high concentration of soluteSolute – a substance dissolved in water. Ex:
salt
Hypotonicsolution with low concentration of solute
Isotonicsolutions with the same solute
concentration
Osmosis Effects on Cells
When a cell is placed in a Hypotonic solution:
Cell gains water through osmosis
When a cell is placed a Hypertonic solution:
Cell loses water through osmosis
Effects of Osmosis on Cells
Murky and Main PointsWrite 3 main points from today’s lesson.
Must be content-based. Ex: The plasma membrane is selectively
permeable to control what is allowed in and out of the cell.
Write 1 or more murky points from today’s lesson. This is material that is unclear to you.
Write 1 favorite point from today’s lesson. What did you enjoy about class today?
