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Lesson 1.3, A, Cell Membrane Structure
| Question | Answer |
|---|---|
| What is a carrier protein? | A carrier protein is a Protein molecule that combines with a substance and transports it through the plasma membrane. |
| What is a channel protein? | A channel protein forms a channel to allow a particular molecule or ion to cross the plasma membrane. |
| What is a receptor protein? | A receptor protein is a protein located in the plasma membrane or within the cell that binds to a substance that alters some metabolic aspect of the cell. |
| What is a fluid-mosaic model? | A fluid-mosaic model is a model for the plasma membrane based on the changing location and pattern of protein molecules in a fluid phospholipid bilayer. |
| What is a glycolipids? | Glycolipids are lipid in the plasma membranes that bears a carbohydrate chain attached to a hydrophobic tail. |
| What is a glycoprotein? | Glycoproteins are protein in the plasma membranes that bears a carbohydrate chain. |
| What is a phospholipid? | A phospholipid is a molecule that forms the bilayer of the cells membranes; has a polar, hydrophilic head bonded to two nonpolar, hydrophobic tails. |
| What does selectively permeable mean? | Selectively permeable means its a membrane that allows the passage of only certain substances, selected on the basis of the size and usefulness of molecules. |
Created by:
megan.mcgill
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