Membrane Structure Flashcards
Membranes act as […]
Membranes act as selective barriers
What is responsible for blocking the passage of most water-soluble molecules from entering the cell?
The lipid bilayers block the passage of most water-soluble molecules
The plasma membrane is more than a barrier, it is the […] the cell has with its environment
The plasma membrane is more than a barrier, it is the interface the cell has with its environment
Membranes are composed of […] and […]
Membranes are composed of lipids and proteins
Membrane lipids are […]
Membrane lipids are amphipathic and have two distinct regions a hydrophilic head and hydrophobic tails
The most abundant lipids in membranes are […]
The most abundant lipids in membranes are phospholipids
Different phoshpolipids have different […]
Different phoshpolipids have different head groups
Most lipids are either […] or have a […]
Most lipids are either net neutral or have a net negative charge
Most membranes in cells have a […]
Most membranes in cells have a net negative charge
Membranes also contain […] and […]
Membranes also contain cholesterol and glycolipids
Membrane lipids from […] in water
Membrane lipids from bilayers in water
Phospholipid bilayers spontaneously close to form […]
Phospholipid bilayers spontaneously close to form sealed compartments
What does the fluidity of a mebrane refer to?
Fluidity of a membrane refers to the lateral movement of lipids and membrane proteins
Membranes with […] hydrocarbon chains are
less fluid than ones containing […]lipids
Membranes with saturated hydrocarbon chains are less fluid than ones containing unsaturated lipids
[…] alters membrane fluidity
Cholesterol alters membrane fluidity