Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Duncan Bio Ch. 7c
Cell Transport
| Question | Answer |
|---|---|
| What is a cell membrane made of? | lipid bilayer: 2 layers of lipids with proteins embedded and some carbohydrates attached to membrane proteins |
| What regulates what enters or leaves the cell? | Cell membrane |
| What are the two general types of transport across cell membranes? | active transport (requires energy) passive transport (does not require energy) |
| what are three types of passive transport (does not require energy)? | diffusion, facilitated diffusion, osmosis |
| What is diffusion? | movement of molecules from high concentration to low concentration |
| Facilitated diffusion is diffusion through with the help of what? | A protein channel (like a tunnel through the membrane) |
| How is osmosis different from diffusion? | osmosis is diffusion of water from a high concentration of water to a low concentration of water |
| Do any types of diffusion require energy? | NO |
| What is hypertonic? | above strength--the more concentrated solution |
| what is Hyptonic? | below strength--the less concentrated solution |
| What is isotonic? | same strength--solutions are the same inside and outside of the cell |
| If a cell is in a hypertonic solution (more solute outside the cell) will the cell get bigger or smaller? | Cell will get smaller because water moves out to dilute the concentrated solution |
| If a cell is in a hypotonic solution (more solute outside the cell) will the cell get bigger or smaller? | cell will get bigger because water move into the cell, which is more concentrated inside that the solution outside |
| If a cell is in a isotonic solution (more solute outside the cell) will the cell get bigger or smaller? | cell will stay the same size because the concentration is equal inside and outside of the cell |
| What is active transport? | Movement across cell membranes that requires energy. When things are too big to diffuse across the membrane, or when things need to go from low to high concentration |
| What is endocytosis? | taking things into the cell--like cell eating (requires energy) |
| What is exocytosis? | putting things out of the cell--exit (requires energy) |
Created by:
msduncan
Popular Biology sets