Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Bio - Cell Transport

Osmosis, Diffusion, Passive & Active Transport
by

Teresa Friedrichsen

on 15 December 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Bio - Cell Transport

Solute Sucks Water!
http://images.google.com/imgres?imgurl=www.biologycorner.com/resources/osmosis.gif&imgrefurl=http://www.biologycorner.com/bio1/diffusion.html&h=186&w=250&prev=/images%3Fq%3Dosmosis%26svnum%3D10%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26sa%3DG
ACTIVE
PASSIVE
CELL TRANSPORT
BULK TRANSPORT
Movement of large amounts of molecules
Types
Exocytosis – molecules exit cell
Endocytosis – molecules enter cell
Molecules move from (their) LOW to (their) HIGH concentration (against the gradient)
Energy required by cell
Transport protein required
ACTIVE TRANSPORT
No energy is expended by the cell
Molecules move from their [high] to their [low]
DIFFUSION
Transport protein required
Protein assists (facilitates) movement of molecules
FACILITATED DIFFUSION
strange diffusion demo with colored corn syrup
osmosis
active transport
OSMOSIS
Movement of molecules from a [high] to a [low] of those molecules (down their gradient)

DIFFUSION
of
WATER
molecules across a semi-permeable
MEMBRANE
Solution
Solvent: dissolver, like water
Solute: substance dissolved, like salt or sugar
ISOTONIC
both solutions have the same concentration of solute
HYPOTONIC:
the solution has a LOWERer [
solute
]
(& therefore
higher [
water
] )
compared to another solution
HYPERTONIC:
the solution has a
HIGHer [
solute
]
(& therefore
lower [
water
] )
compared to another solution
WATER

moves from
higher [
water
] --> lower [
water
]
lower [
solute
] --> higher [
solute
]
diffusion - no membrane
diffusion - with membrane
OSMOSIS
DIFFUSION
FACILITATED DIFFUSION
ACTIVE TRANSPORT
What happens when 2 solutions are separated by a semi-permeable membrane that will not allow solutes to pass across?
hypotonic or hypertonic?
9.5 min

nutrients
O2
information

waste
CO2
information

CELL MEMBRANES & TRANSPORT
water
water
surrounds the cell
sends & receives messages
maintains homeostasis
it's selectively permeable-
only specific kinds & amounts
of molecules can enter & exit
transfer information
polar
nonpolar
act as identity markers; identify "self" from "non-self"
cholesterol:
helps strengthen the membrane

Results in Equilibrium
4 min rap review
Higher concentration of solute
lower concentration of solute
CHOLESTEROL!
PROTEINS
PROTEINS!
bubbles
cell membrane!
plasmolysis in Elodea
Full transcript