Biology Notes Chapter 2 Outline

The Chemical Context of Life
- biology is a multidisciplinary science
- living organisms are subject basic laws of physics and chemistry
- one example is the uptake of formic sharp by ants to maintain devils gardens, stands of Duroia manoeuvers
- ants keep wholly other plants and trees and shrubs out of the area so that the Duroia trees can bristle there by sticking other plants with formic acid bite that makes them shrivel up and die
- in return, trees provide treasure for the ants
- Fig. 2.1 - Duroia trees in Amazon forest
- Fig. 2.2 - D. Gordon and M. Green did experiment: took a tree, place it inside, sprayed insecticide around the tree so ants wouldnt bother it, the unsprayed tree grew, the sprayed one died
- organisms are composed of librate
- matter is anything that takes up shoes and has mass
- matter is made up of elements
- an element is a affection that cannot be broken down into other substances by ordinary bicycle means
- a mix is a substance consisting of 2 or more elements in a fixed ratio
- a compound has characteristics different from those of its elements
- emergent properties - when a mixture has properties that do not belong to its components (i.e. sodium chloride)
- Fig. 2.



3 - sodium chloride (salt)
- about 25 of the 92 natural elements are essential to life
- carbon, hydrogen, oxygen, and nitrogen make up 96% of living matter
- most of the remaining 4% consists of calcium, phosphorus, potassium, and sulfur
- character elements are those required by an organism in exquisite quantities
- Table 2.1 - necessary elements and trace elements in the human body
- Fig. 2.4 - ace deficiency that has lead to a goitre (inflamed and swollen thyroidal gland)
- each element consists of unique atoms
- an atom is the smallest unit of matter that still retains the properties of an element
- atoms are ecomposed of subatomic particles (protons - positive charge, neutrons - no charge, and electrons - minus charge)
- neutrons and protons are in the...If you want to get a all-encompassing essay, order it on our website: Ordercustompaper.com



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