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Membrane Structure

Across
A channel protein i a cellular membrane that specifically facilitates osmosis.
Affinity for water.
A lipid with one or more covalently attached carbohydrates.
Protein that provides hydrophilic passageways through otherwise hydrophobic membranes.
_____ pumps, are electrogenic pumps that store energy by generating voltage across membranes.
Like all biological membranes,the plasma membrane exhibits selective ______; that is, it allows some substances to cross it more easily than others.
The meshwork surrounding animal cells, consisting of glycoproteins , polysaccharides and proteoglycans synthesized and secreted by cells.
Regulates what enters and leaves the cell and separates the internal environment of the cell from the external environment.
Hydrocarbon tails (kinked) prevent packing, enhancing membrane fluidity.
The currently accepted model of cell membrane structure. Fluid ______ model.
Proteins that facilitate the movements of nutrients such as sugars and amino acids across membranes.
Down
A double layer of phospholipids that makes up a plasma membrane.
Reduces membrane fluidity at moderate temperatures by reducing phospholipid movement.
Proteins that are looseley bound to the surface of the membrane.
A lipid made up of glycerol joined to two fatty acids and a phosphate group.
A phospholipid is an ______ molecule.
A sugar
A protein with one or more covalently attached carbohydrates.
Group of pore forming trans-membrane proteins.
Having no affinity for water.
Hydrocarbon tails pack together increasing membrane viscosity.
Proteins that penetrate the hydrophobic interior of the lipid bilayer.
Proteins in the plasma membrane that carry out final stages of starch and protein digestion in small intestine.