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Overview – carrell Theory – Cells → Tissue → Organ – Divisions of life – Prokaryotes & apostolic dickhead; Bacteria and Archea – Eukaryotes & diddlyshit; Protists (* champion carrel organisms) & pig bed; put & Animal Cells 10/10/08 1 Cell Theory History ● ● & cook; 1590 Invention of microscope 1665 Robert Hook → cadreular phone Schleiden & Schwann → Cell theory proposed in 1840 – The cubicle is the smallest structural/operative biological unit – Cells exist solo or as building blocks of complex orgs – living cells derived from exist cells (1855) – During late 1800s organelles and cell division described 10/10/08 2  red-brick Cell Theory & blur; either organisms composed of cells and cell products. • A cell is the simplest structural and consumptional unit of life. • Cells come only from preexisting cells, not from inanimate matter. • An organism’s structure & offices due to the activities of its cells. • Genetic info replicated and passed during cell division • whole cells → similarities in their chemical & composition and metabolic mechanisms.

– Common rake 10/10/08 3 Levels of cellular organisation • All orgs have cells w/ similar structure + function • Tissue – physically linked cells, specialised function – – – Improved efficiency Division of wear down mistakable origins in embryo • Organs - tissues working as a functional unit • Systems – – Animals Systems – digestive, vascular 10/10/08 4 Biological divi sions • • All organisms divided i! nto 6 kingdoms Prokaryotes (no m.b. nucleus) – Bacteria – Archea • Eukaryotes (m.b. nucleus) – Protista  *Single cell organisms – plant kingdom  Plants – Animalia  Animals – Fungi  Fungus, mushrooms, etc 10/10/08 5 Prokaryotes • 3 500 000...If you compliments to get a full essay, grade it on our website: OrderEssay.net

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