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
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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