3A_Biomolecules

__Homeostasis__
Change within a living system to achieve stable biological equilibrium


 * 1) Diffusion - Movement of gas particles from a higher concentration to a lower concentration
 * 2) Osmosis - Movement of water particles through a partially permeable membrane from a higher water potential to a lower water potential
 * 3) Active and passive transport
 * 4) Cells
 * adapting to changes
 * functioning as a system

__Living organisms obtain and process matter and energy__

Digestive system Animals process food they eat (obtain) to convert to energy for respiration. Photosynthesis Plants + Water (matter) + Sunlight (energy) + Carbon dioxide (matter) -> Plants + Oxygen (matter)

Glucose (soluble) is converted to starch (insoluble) for storage Energy flows through a system (carbon cycle etc.) Plants - photosynthesis Humans - ingestion

Carbon -building block of life -4 free valence electrons -can bond with four atoms or itself -allows molecules to be as long as possible -single or double bond

Water

Glycosidic bond - saccharides C(n)H(2n)O(n) Starch -condensation-> glucose Glucose -hydrolysis-> Starch Glycogen -stored in muscles -converts to glycose during long term running

Reducing sugar -exchange electrons reduce chemicals