Homeostatis

__My personal thoughts about homeostasis...__ Prokaryote cells - made up of more than 1 cell (e.g. animal cells) Eukaryote cells - made up of 1 cell (e.g. bacteria)

__1. Homeostatis__ - living system - change and balance --> equilibrium - active and passive transport

__2. Matter, energy and organisation__ //** Living systems are complex and highly organized, and they require matter and energy to maintain this organization. **//
 * **Energy** is stored in the organization of matter
 * Living organisms use matter and energy to build and maintain body structures
 * Living organisms obtain and process matter and energy
 * The structure of a molecule always dictates its function.
 * The structure and function of biological living systems obeys the laws of thermodynamics.
 * Communities of organisms depend on the cycling of matter and the flow of energy
 * The constant flow of energy and cycling of matter in the biosphere leads to a balanced or steady state.

This balance is achieved through various biogeochemical cycles and the processes of photosynthesis and cellular respiration - //focus is on ENERGY// The constant flow of energy and cycling of matter in the biosphere leads to a balanced or steady state.

__Point researched on:__
 * The constant flow of energy and cycling of matter in the biosphere leads to a balanced or steady state.

Nutrient cycles for nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) have been adapted from various sources by PPI scientists. They are shown individually through the following links.
 * Nutrient Cycles **
 * [[image:http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/85e4a99f678ca758852569b5005c1486/Body/0.AC%21OpenElement&FieldElemFormat=gif width="332" height="262" link="@http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/b438d5e8c2452786852569b5005ab164/Body/0.AA%21OpenElement&FieldElemFormat=gif"]] || [[image:http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/1dabab791e9edec7852569b5005ced25/Body/0.AC%21OpenElement&FieldElemFormat=gif width="336" height="262" link="@http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/1dabab791e9edec7852569b5005ced25/Body/0.AC%21OpenElement&FieldElemFormat=gif"]] ||
 * [[image:http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/92a2158ba56b59a0852569b5005d14cc/Body/0.A8%21OpenElement&FieldElemFormat=gif width="315" height="263" link="@http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/92a2158ba56b59a0852569b5005d14cc/Body/0.A8%21OpenElement&FieldElemFormat=gif"]] || [[image:http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/b438d5e8c2452786852569b5005ab164/Body/0.AA%21OpenElement&FieldElemFormat=gif width="335" height="260" link="@http://www.ipni.net/ppiweb/ppibase.nsf/b369c6dbe705dd13852568e3000de93d/b438d5e8c2452786852569b5005ab164/Body/0.AA%21OpenElement&FieldElemFormat=gif"]] ||

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