Cell Membrane Structure
Movement across Membrane
Osmosis
Active Transport
Miscellaneous
100
What makes up the bilayer in a cell membrane?
Phospholipid bilayer
100
The movement of molecules of any substance so that they spread out evenly into the available space
What is Diffusion
100
What is the diffusion of free water?
What is Osmosis
100
What is active transport?
The movement of a substance against its concentration gradient
100
What is another term for cell membrane
Plasma Membrane
200
What helps transport certain materials across the cell membrane?
Integral protein
200
Term for something that attracts water
Hydrophillic
200
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What is Hypertonic Solution
200
What energy is being used during Active Transport?
ATP
200
The phospholipids have a hydrophilic _______ and two hydrophobic _______.
Head, Tails
300
These attract water
Phosphate Heads
300
Term for something that repels water
Hydrophobic
300
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What is Hypotonic Solution
300
In which direction (concentration gradient) does the movement of Active Transport occur?
against
300
Covalently bonded proteins are known as this
Glycoproteins
400
What repels water in the cell membrane?
Fatty Acid Tails
400
Diffusion through protein channels wheere no energy is needed
What is Facilitated Diffusion
400
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What is Isotonic Solution
400
This actively transports protons out of the cell
The proton pump
400
These kind of proteins penetrate the hydrophobic interior of the lipid bilayer
Integral Proteins
500
What helps maintain the flexibility of the membrane?
Glycolipids
500
The region along which the density of a chemical substance increases or decreases
What is the Concentration Gradient
500
What is it called when a plant cell shrinks because of loss of water
Plasmolysis
500
Movement into a cell by means of a vesicle
Endocytosis
500
This actively transports protons out of the cell
The Proton Pump
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