Movement Across the Cell Membrane A. Cell Membrane ▶Cell Membranes surround ALL cells! ▶Controls what molecules food and oxygen molecules must enter the cell waste products need to be released ▶SEMIPERMEABLE - B. Structure of Cell Membrane ▶Phospholipid bilayer Polar heads " ▸Nonpolar tails C. Fluid Mosaic Model Describes the ▸Example: °1. another "water "1 materials across membranes water 1. Passive Transport ▶ D. Transport Across a Membrane ▶Molecules can enter or leave the cell in 2 ways: * Diffusion * Carrier-Facilitated ("helped") Diffusion * Osmosis ▶Molecules move from area of phospholipid- bilayer found in the ▶Example: Like riding a bike downhill ° 2. Water SONDISHO www and _: act like identification cards so cells can identify one * Water * Protein Pump * Endocytosis Exocytosis -polar nonpolar -nonpolar polar to move across the membrane to occur to area of

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Unit 2: Cells & Histology
A&P Chapter 3.2, Bio 7-3
Movement Across the Cell Membrane
A. Cell Membrane
▶Cell Membranes surround ALL cells!
▶Controls what molecules
▶SEMIPERMEABLE
food and oxygen molecules must enter the cell
waste products need to be released
B. Structure of Cell Membrane
▶Phospholipid bilayer
▶Polar heads
▸Nonpolar tails
C. Fluid Mosaic Model
▶Describes the
▸Example:
°1.
another
-
materials across membranes
* Diffusion
*
"1
D. Transport Across a Membrane
▶Molecules can enter or leave the cell in 2 ways:
* Osmosis
water (
"water (
1. Passive Transport
Carrier-Facilitated ("helped") Diffusion
▶Molecules move from area of
▶Example: Like riding a bike downhill
phospholipid-
bilayer
found in the
° 2.
Water
Chaconhapse are
wwwwwang
Water
and
*
: act like identification cards so cells can identify one
* Protein Pump
Endocytosis
* Exocytosis
polar
-nonpolar
nonpolar
polar
to move
across the membrane to occur
to area of
Transcribed Image Text:Unit 2: Cells & Histology A&P Chapter 3.2, Bio 7-3 Movement Across the Cell Membrane A. Cell Membrane ▶Cell Membranes surround ALL cells! ▶Controls what molecules ▶SEMIPERMEABLE food and oxygen molecules must enter the cell waste products need to be released B. Structure of Cell Membrane ▶Phospholipid bilayer ▶Polar heads ▸Nonpolar tails C. Fluid Mosaic Model ▶Describes the ▸Example: °1. another - materials across membranes * Diffusion * "1 D. Transport Across a Membrane ▶Molecules can enter or leave the cell in 2 ways: * Osmosis water ( "water ( 1. Passive Transport Carrier-Facilitated ("helped") Diffusion ▶Molecules move from area of ▶Example: Like riding a bike downhill phospholipid- bilayer found in the ° 2. Water Chaconhapse are wwwwwang Water and * : act like identification cards so cells can identify one * Protein Pump Endocytosis * Exocytosis polar -nonpolar nonpolar polar to move across the membrane to occur to area of
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