Term
|
Definition
|
|
Term
| What type of cells have a cell membrane? |
|
Definition
| eukaryotic and prokaryotic cells |
|
|
Term
| What does it mean that the head is "polar"? |
|
Definition
| It means that this part is favorable of water |
|
|
Term
| What does it mean that the tails are "non-polar"? |
|
Definition
| It means that the part tries to stay away from water |
|
|
Term
| What kind of molecules can pass easily through the phospholipid bi-layer? |
|
Definition
| small non-polar molecules like oxygen gas |
|
|
Term
| How do molecules move through a cell? |
|
Definition
| low to high concentration |
|
|
Term
| In simple diffusion,molecules move from: |
|
Definition
| high concentration to low concentration |
|
|
Term
| What two molecules can easily pass through the phospholipid bilayer? ( cell membrane ) |
|
Definition
| carbon dioxide and oxygen |
|
|
Term
|
Definition
| passive transport that does not require energy |
|
|
Term
| What are transport protiens and what do they do in the cell |
|
Definition
| a membrane protein that helps move substances across a cell membrane |
|
|
Term
| What is the job of a transport protien? |
|
Definition
| they help move things cross the cell membrane |
|
|
Term
| What kind of things do transport protiens move? |
|
Definition
| molecules that are too big to move through the cell membrane |
|
|
Term
| In facilitated diffusion, large molecules cannot pass across the cell membrane without the help of |
|
Definition
|
|
Term
| Why is facilitated diffusion a type of passive transport? |
|
Definition
| solutes move down the concentration gradient without using cellular energy |
|
|
Term
| _______ doesn't require a transport protien to cross the cell membrane |
|
Definition
|
|
Term
| _________ does require a transport protein to cross the membrane |
|
Definition
|
|
