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Bio-Cellular Transpo
Bio- transport and homeostasis
| Question | Answer |
|---|---|
| Plasma Membrane? | maintains homeostasis by controlling what enters and leaves the cell |
| Phosopholipid Bilayer? | 2 fatty acid tails; controls what enters and leaves the cell |
| Phosphate Head is | hydrophilic |
| passive Transport | high con. to low con.; down con. gradient; uses no energy |
| Simnple Diffusion | (passive transport) gases H2O, Co2, O2 |
| Which organelles are invovled in the process called endocytosis? | Vesicles |
| A cell moves particles from a region of lesser con. to a region of greater con. by ______ | Active Transport |
| Osmosis | water passes through a membrane (passive transport) |
| Hypertonic | (shrink)water leaves |
| Isotonic | same going in and out |
| Hypotonic | (swell) water moves in cell |
| Facilitated Diffusion | carrier proteins and ion channels (passive transport) |
| Active Transport | low con. to high con.; up/against con. gradient; energy needed |
| Pumps | Na+ (sodium,out)/K+ (potassium,in)pump (require vesicles) |
| Endocytosis, 2 types | in; pinocytosis (small) phagocytosis (Large) |
| Exocytosis | exit |
| Placing a plant in a hypertonic environment will________ | cause turgor pressure to decrease |
| If a cell is placed in salt water, water leaves the cell by | osmosis |
| The structure most responsible for maintaining cell homeostasis is the | plasma membrane |
| The diffusion of water into or out of cell is called | osmosis |
| The dispersal of ink in a beaker of water is an ex. of | diffusion |
| The sodium potassium pump usually pupms | potassiium ions into the cell |
| The cell membrane ________ | allows things to enter and leave the cell and holds things in the cell |
| A cell will swell when it is placed in a(n) | hypotonic solution |
| Osmosis is a type of | passive transport |
| Proteins invovled in facilitated diffusion are | carrier proteins |
| Molecules that are too large to be moved through the membrane can be transported into the cell by | endocytosis |
| An example of active transport across a cell membrane | sodium/potassium pump |
| Transport proteins that allow ions to pass through the cell membrane are | ion channels |
| Bc the phospholipid molecules and some proteins are free to move the plasma membrane is said to be | a fluid mosaic |
| Ion channel gates close the pores of some ion channels in response to | `change in electrical charge stectching of cell membrane |
| Sugar molecules like glucose cross the cell membrane by | facilitated diffusion |
| Water moves out of a cell if the cell is placed in a(n) ______ soloution | hypertonic |
| What does not require energy | passive transport (difussion,fac. diffusion, osmosis) |
| what requires the aid of cell membrane pumps | active transport |
| Diffusion moves from | higher con. to lower con. |
Created by:
dabears
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