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chapter 3 cell
cell review
| Question | Answer |
|---|---|
| what three structure's do all cells have in common? | cell membrane cytoplasm mitochondria |
| what organ in our bodies would you find cells with a lot of mitochondria and why? | the muscle cells because they use a lot of energy for labor every day |
| what are the three parts of the cell theory? | 1.cells are the basic unit of life 2.all organelles are made on one or more cells 3.all cells arise from pre-existing cells |
| describe a life of a protein in the cell? | proteins are stored into a vesicle in the rough er protiens go into the golgi apparatus proteins are packaged proccesed and distrubuted in the golgi apparatus a vesicle is formed around the new protein the new protein goes to its destination |
| what items are moved in facilitated diffusion? | solutes and water |
| what concentration is facilitated diffusion moved from? | high |
| what concentration is facilitated diffusion moved to? | low |
| does facilitated diffusion require energy? | no |
| is a transport protein required for facilitated diffusion? | yes |
| what items are moved in diffusion? | solutes |
| what concentration is diffusion moved from? | high |
| what concentration is diffusion moved to? | low |
| is energy required for diffusion? | no |
| is a transport protein required for diffusion? | no |
| what items are moved in active transport? | solutes |
| what concentration is active transport moved from? | low |
| what concentration is active transport moved to? | high |
| is energy required for active transport? | yes |
| is a transport protein required for active transport? | no |
| what items are moved in osmosis? | water |
| what concentration is osmosis moved from? | high |
| what concentration is osmosis moved to? | low |
| does osmosis require energy? | no |
| does osmosis require a transport protein? | yes |
| what is the difference between diffusion and osmosis? | osmosis transfers water and diffusion transfers solutes |
| what are the four primary functions or roles that the cell membrane plays? | 1. to let things in and out of the cells 2. determines cell shape 3.holds cellular contents together 4. provides a barrier or buffer between the cell and the environment. |
| why are the hydrophobic and hydrophilic ends of the phospholipids arranged or oriented inside the membrane the way they are? | hydrophilic heads are facing towards water because they like water and hydrophobic tails aren't touching water because they don't like water |
| solvent? | substance that dissolves another substance |
| solute? | substance that is in another |
| solution? | a mixture of one substance dissolved in another |
| hypotonic? | a solution with a solute that is less than the solution it is compared with |
| hypertonic? | a solution with a solute that is greater the solution it is compared with |
| isotonic? | solution with the same solute that is equal the solution it is compared with |
| selectivly pereable? | membrane is specific with what it lets in and what it keeps out. |
Created by:
rcbutler
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