Passive and Active Transports go hand and hand with Homeostasis. When there is a build up in the cell that disrupts that cell functions these transports can help these cells maintain Homeostasis. A way these transports do so are through diffusion, osmosis, moving to different levels of concentration levels, etc. Essential Question: How do mechanisms that permit organisms to maintain biological balance between their internal and external environments?
Homeostasis
Homeostasis is the maintenance of a constant internal state. Internal states and conditions need to be regulated and maintained within a specific ranges for the functions to work properly. Two Different forms of Homeostasis:
-Negative feedback: If there is something wrong in your body, any change to the system will cause it to go back to it's original state. Ex. When you work out and became hot, your body starts to produce sweat to cool off your body until your body temperature goes back to normal. -Positive feedback: The changes will cause a larger change to the system, going farther away from the original state. Ex. When a woman is about to give birth, her contractions will be more and more frequent and intense since her body is being prepared to give birth.
TRANSPORTATION
Active Transport: Active transport is the movement of partials from an area of low concentration moving across the membrane to an area with a higher concentration level. -Active transports uses energy in the form ATP. -The cell uses this transport to build up a concentration gradient.
Passive Transport: Passive transport is the movement of partials from an area of higher concentration moving across the membrane to an area with a lower concentrations level. -Does not require energy -Simple diffusion and diffusion are passive.
Quiz!!!!
1. What is an example of Passive Transport? a. Osmosis b. Simple diffusion c. Exocytosis d. Both a and b
2. True or false, every cell or complex organism uses the process homeostasis? a. True b. False
3. What is it called when the movement of molecules becomes equal and stops? a. Pause b. Diffusion c. Equailibrium
Short Answers:
1. What is two of the main differences between Passive Transport and Active Transport? 2. How is a jogger sweating an example of homeostasis