4.2a Chemical Structure of the Plasma Membrane
Terms in this set (10)
What are the 3 main lipids found in the plasma membrane?
Phospholipids, cholesterol, glycolipids
[X] is a component of plasma membranes found only in animal cells, not in plants. Consequently, any animal dericed food, such as eggs, milk, and meat, contains [X]. Foods obtained from plants, including carrots, corn, and potato chips cooked in vegetable oil, do not contain [X]. What is X?
Lipid that forms bilayers of the plasma membrane.
What does the phospholipid bilayer separate?
The cytosol on the inside and the interstitial fluid on the outside.
Type of steroid found in the plasma membrane.
Lipid with an attached carbohydrate group found on the extracellular side of the plasma membrane.
Filamentous coating on the apical surface of certain types of cells.
Glycolipid and glycoprotein.
Is the lipid portion of the plasma membrane soluble or insoluble?
Insoluble; lipids are hydrophobic.
How do lipids maintain the basic physical barrier of the plasma membrane?
They function as hydrophobic barriers against dissolution in water and most other substances. Only small and nonpolar substances can readily penetrate without assistance.
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