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
bio- chapter 3
| Term | Definition |
|---|---|
| prokaryotic cells | lack internal membrane-bound organelles |
| eukaryotic cells | membrane bound organelles, including a nucleus |
| peptidoglycan | polymer made of sugars, and amino acids, allows bacteria to survive in a watery environment |
| osmosis | The diffusion of water across a membrane from an area of lower solute concentration to an area of higher solute concentration. |
| hypotonic solution | A solution in which the concentration of solutes is less than that of the cell's cytpolasm; cell swells |
| hypertonic solution | cell placed in a solution with a higher solute concentration than that of the cell's own cytoplasm will tend to lose water and shrivel. |
| isotonic solution | when concentrations are equal inside and outside the cell; water flows in and out of the membrane at the same rate |
| gram positive | penicillin is affective with this type of bacteria |
| semipermeable | some substances can pass directly through the cell membrane by passive or active transport |
| simple diffusion | Natural tendency of dissolved substances to move from an area of higher concentration to one of lower concentration (up and down); no energy required |
| transport proteins | provide a passageway for large or hydrophilic molecules to cross the membrane |
| facilitated diffusion | When a substance moves "downhill" by a transport protein from an area of higher concentration to an area of lower concentration (passive transport) |
| active transport | in which proteins pump a substance "uphill" from an area of lower concentration to an area of higher concentration; requires energy |
| nucleus | encloses the cell's DNA and acts a control center |
| rough er | generates proteins |
| smooth er | responsible for creating the lipids |
| golgi apparatus | organelle that packs the protein into small membrane vesicles and then ships them to specific destinations |
| lysosomes | digest and repurpose molecules |
| cytoskeleton | allows cells to move and maintain their shape |
| chloroplast | capture and conversion of sunlight energy into a usable form |
| mitochondria | extracts energy from the food source and converts the energy to a useful form |
| endosymbiosis | Free-living prokaryotic cells engulfed other free-living prokaryoticcells billions of years ago, forming mitochondria and chloroplasts. |
Created by:
kayla_z12
Popular Biology sets