UNIT 1. THE HUMAN
What is the fundamental structural and genetic unit of all living beings?
Apuntes
UNIT 1. THE HUMAN BODY 3 rd ESO BIOLOGY AND GEOLOGY CONTENTS 1. The cell: the unit of life 2. Levels of organisation 3. Internal environment and homeostasis 1. The cell: the unit of life Levels of organization 1. OrganizaciĂłn de la materia viva u Los componentes quĂmicos de los seres vivos se agrupan en estructuras con distinto grado de complejidad llamados NIVELES DE ORGANIZACIĂ“N: 1. Nivel subatĂłmico 2. Nivel atĂłmico 3. Nivel molecular 4. Orgánulos celulares 5. Nivel celular 6. Nivel pluricelular 7. Nivel de poblaciĂłn 8. Nivel de comunidad 9. Nivel de ecosistema Grado de complejidad creciente 1. The cell: the unit of life CELL: the fundamental structural and genetic unit of all living beings and is also the minimum unit capable of performing the three vital functions: nutrition, interaction and reproduction. Size of human cells : 10-100 ÎĽm Ă microscopic Robert Hooke and Anton van Leeuwenhoek designed the MICROSCOPE. OPTICAL MICROSCOPE ELECTRON MICROSCOPE Photons of light Electrons 1500X magnification 10 6 X magnification Optical microscope Electron microscope CELL THEORY • Robert Hooke discovered the cell with his simple microscope ...
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