Lordy's+work

Lordys Work

What is an Organisim?
A organisim is somthing that lives and that can reproduce and make more life.

History Of Science

How did early civilazations explain biological diversity? The early civilazation's thought that God made the earth and made humans the most important people and that other animals are there just for the fun of it cause God was bored. They also thought that the earth was flat and that the sun spun around the earth. Early philosophers belived that the huge variety of different organisms that exist on earth were created by a supreme being (ie a God) and that they were IMMUTABLE(they could not change).

Classification

The process of organising organisms into group based on predetermined criteris is called classification. Ther classification of living things is said to be a strong multi level classification, Strong, because the schem gives preductable results. Multilevel because major groupings may be further subdivided into smaller, subgroups. The criterion we use to assign organisms to groups is the closeness of the evolutionary relationship



Hierarchies and Organisation Organisms have the following levels of organisation:
 * 1) Atoms: They are everywhere in everything.
 * 2) Molecules: The smallist thing that can live on its own and is made of atoms like a compound. H ﻿2 0 is a molecule. S ﻿1 O ﻿2﻿ ﻿﻿ is an compound which lives with other componds.
 * 3) Cells: The base for a form of life, made from molecules. eg, an animal cell
 * 4) Tissues: Are cells joined together to form a layer of cells. eg, skin, cornective tissues,
 * 5) Organs: They are made from different types and forms of tissues. eg, Lungs, throat,
 * 6) Organ systems: Systems of organs joined. eg, the lungs go to the heart which is joined to the vains



Membrane Define Cells Biological membrains are made from phospholipids Membranes have 2 parts, one that hate water and one that likes water Hydrophillip Hydrophobic When put in water together to form a