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Cellular Transport
| Question | Answer |
|---|---|
| When the particles of one substance are uniformly distributed in another substance. | Solution |
| A substance that can dissolve another substance. | Solvent |
| A substance that is dissolved in a solvent. | Solute |
| The constant random movement of molecules is called ____________. | Brownian movement |
| The process by which molecules of a substnce move from areas of higher concentration to areas of lower concentrations. | Diffusion |
| The diffusion of water is called ______. | Osmosis |
| A membrane that allows only certain substances pass through it is called ______________. | Selectively permeable |
| The difference in the concentration of molecules from the highest concentration to the lowest concentration is called a ________. | Concentration gradient |
| Three Factors that Affect Diffusion Rates | 1. Concentration2. Temperature3. Pressure |
| The cell membrane is composed of ____________. | 1. Two layers of phospholipids2. Proteins3. Cholesterol4. Carbohydrate chains |
| The fact that lipids are fluid and allow proteins to move within the lipid bilayers is called the ___________. | Fluid Mosaic Model |
| Water makes up how much of a living cell? | 70% - 90% |
| When concentration of solutes outside of the cell is the same as the inside of the cell it is called a(n) ___________. | Isotonic solution |
| When concentration of solutes outside of the cell is the lower than the inside of the cell it is called a(n) ___________. | Hypotonic Solution |
| When concentration of solutes outside of the cell is greater than the inside of the cell it is called a(n) ___________. | Hypertonic Solution |
| Means of transport across a cell membrane that does not require energy are called _________. | Passive transports |
| Proteins in the cell membrane that transport large molecules or molecules that cannot dissolve in the lipids of the cell membrane. | Carrier Proteins |
| Substances move with the concentration gradient from high to low, but carrier molecules speed up the movement of diffusing substances. Requires NO energy. | Facilitated Diffusion |
| The movement of materials against the concentration gradient from low to high concentrations. Requires energy. | Active Transport |
| Transport of materials that cannot move in and out across the membrane with or without the aid of transport proteins. | Bulk Transport |
| Type of bulk transport of substances into the cell by creating a vesicle. | Endocytosis |
| Type of bulk transport that moves solids into a cell. Amoebas use this method taking in food. | Phagocytosis |
| Type of bulk transport of substances out of the cell using a vesicle. | Exocytosis |
Created by:
lsanflo
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