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diffusion
unit test for cells
| Question | Answer |
|---|---|
| cell | basic unit of all life |
| organelle | specialized structures that perform important cellular functions |
| What is the difference between a eukaryotic and prokaryptic cell? | prokaryotic cells do not have a nucleus and eukaryotic cells do have a nucleus. |
| What makes up the phosopholipid bilayer of a cell membrane? | a phosphate head (water loving and a fatty acid tail (water fearing) |
| concentration | The amount of salute in a solution. salute +solvent= salution |
| diffusion | Moves small molecules into and out of the cell, moves from an area of high to an area of low concentration, does not use energy |
| facillitated diffusion | Moves small molecules into and out of the cell, move from an area of high to and area of low concentration, uses protein channels, no energy |
| osmosis | Moves small water only molecules into and out of the cell membrane by way of aquaporins, moves from an area of high to low concentration, no energy required |
| isotonic | The concentration of two solutions are the same , equal |
| hypertonic | The solution with the greater concentration of solutes, the cell shrinks |
| hypotonic | the solution with the lesser concentration of salutes, the cell swells |
| Active transport | Movement across the cell membrane, moves from low to high concentration, requires energy. |
| molecular transport | movement across the cell membrane using protein pumps, moves large molecules from low to high concentration, requires energy |
| endocytosis | movement of large molecules into the cell by engulfing the molecule, surrounding it with a vessicle and pulling it into the cell. |
| exocytosis | the releasing of a large molecule by the cell into it's surrounding environment. |
| photosynthesis | CO2 (carbon dioxide) +H2O (water) react to make the products C6H12O6 (glucose) + O2 (oxygen) |
| pigment | Is a light absorbing molecule |
| Chlorophyll | Pigment within plants and other photosynthetic organisms |
| What are the two main functions of the cell membrane? | 1. controls what enters and leaves the cell maintaining homeostasis. 2. provides protection and support for the cell. |
| What are the three types of passive transport? | 1. diffusion 2. osmosis 3. facillitated diffusion |
| What are the three types of active transport? | 1. molecular transport 2. endocytosis 3. exocytosis |
| What direction will water diffuse based on the concentrations of two solutions? | Water will diffuse to dilute the solute , water will move into the area with the highest concentration of salute. |
| What are the two forms of endocytosis? | 1. phagocytosis-cell eating 2. pinocytosis-cell drinking |
| What are the three parts of an ATP molecule? | 1. base-adenine 2. phosphates (3) 3. Bonds - energy is stored between the 2nd and 3rd bonds |
| What are the three factors that affect photosynthesis? |
Created by:
Dcrawford
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