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7.3 Cell Transport
Passive transports,kinetic energy......
| Question | Answer |
|---|---|
| What is a passive transport? | movement of materials across the cell membrane without using cellular energy |
| What is kinetic energy? | drives diffusion, all molecules have kinetic energy and molecules ,must move in a straight line until they hit something |
| What is concentration gradient? | difference in concentration of molecules across a space |
| What is equilibium? | concentration of molecules is the sane throughout a space |
| What is diffusion? | movement of molecules from high to low concentration without energy from cell(Passive) |
| What is facilitated diffusion? | molecules that cannot directly diffuse across a membrane pass through special protein channels |
| What is Osmosis? | Diffisopn of water through a selectively permeable membrane (Passive) |
| What is Aquaporins? | Water protein channels that allow water to pass right through the cell membrane |
| What are the 3 types of solution? | hypotonic, hypertonic,and isotonic |
| What is a hypotonic solution? | the amount of solutes outside of the cell is lower than inside the cell |
| What is a hypertonic solution? | the amount of solute outside the cell is higher than inside the cell |
| What is the isonic solution? | the same amount of solute inside and out of the cell |
| What is an active transport? | movement of materials against the concentration gradient |
| What is Pinocytosis? | cell drinking |
| What is phagocytosis? | cell eating |
| What is a vesicle? | a part of the cell membrane that surround incoming substances |
Created by:
motleyb
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