Biology Notes Chapter 2 Outline

The Chemical Context of Life - biology is a multidisciplinary lore - living beingnesss argon subject basic laws of physics and chemistry - unity 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 domain of a function so that the Duroia trees can bristle there by gummy 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 virago forest - Fig. 2.2 - D. Gordon and M. Green did experiment: took a tree, place it inside, sprayed insect powder 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 plaza 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 - emerging properties - when a mixture has properties that do not belong to its components (i.e. atomic number 11 chloride) - Fig. 2.

3 - sodium chloride (salt) - about 25 of the 92 intrinsic 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 - neces sary elements and trace elements in the huma! n body - Fig. 2.4 - ace deficiency that has lead to a goitre (inflamed and swollen thyroidal gland) - each element consists of unmatched 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: BestEssayCheap.com

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