Biology
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25 terms
Terms | Definitions |
|---|---|
 diffusion | molecules go from an area of high concentration to low concentration |
| osmosis | the diffusion of water |
| hypotonic | theres a larger concentration of solutes inside the cell water flows in and the cell swells |
| hypertonic | larger concentration of solutes outside the cell water flow outside the cell and starts shrinking |
| isotonic | concentration of solutes is the same inside and outside the cell, no net moving of waters cell stay the same |
| passive transport | molecules go down their concentration gradient go from an area of high concentartion to low concentation. |
| active transport | energy goes against the concentration gradient |
| endocytosis | membrane surrounds items outside the cell and form a vesicle to bring them in |
| exocytosis | molecules come to the membrane it forms a vesicle around them and spits them out |
| pinocytosis | cell drinking ( brings in water) |
| phagocytosis | cell eating ( bringing in food) |
| what is the differnece between active and passive transport | passive transport is when molecules go down the concentration gradient, active is when energy goes against the concentration gradient |
| interphase | growing and surving |
| g1 phase | cell is growing and doing day to day functions |
| g2 phase | makes copies or extra organelles additional growth, adds storeage |
| S phase | nakes a copy of the DNA |
| mitosis | preperation for cell divison |
| cytokinesis | cell divison |
| checkpoint 1 | the cell is big enough for divison and does it have enough reason |
| checkpoint 2 | make sure the DNA was copied correctly |
| checkpoint 3 | check organelles that we are ready for divison |
| prophase | wrap up the chromosomes innto chromoses dissolve nucleus centrioles move to opposite sides of cell |
| metaphase | line up the chromosomes to the middle of the cell, spindle fibers attach the centermeres |
| anaphase | spindle fibers pull in the opposite direction towards the centrioles to bring the chromosones to the opposite side of cell. |
| telophase | unwrap the chromatinsmake a nucleus dissolve the centrioles |
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