2 CONTENTS THE BASIS OF LIFE Vital functions Biomolecules Cellular nutritionAutotrophic nutritionHeterotrophic nutritionPhotosynthesisCellsHistory of cell discoverySize and shapeStructure and compositionTypes of cellsCellularrespirationCellular respirationCell divisionGenetic materialMitosis
3 RESOURCES Vital functions Biomolecules History of cell discovery Size and shapeof cellsStructure and compositionof cellsTypes of cellsCellular nutritionAutotrophic nutritionHeterotrophic nutritionPhotosynthesisCellular respirationCell divisionLinksIntroducing cellsMitosisGenetic material
4 Vital functions VITAL FUNCTIONS Living beings NUTRITION INTERACTION REPRODUCTION
5 Vital functions Heterotrophic organisms Living beings NUTRITION Living beings obtainthe matter and energynecessary for life.inorganic matterorganic matterGO BACKAutotrophic organisms
6 Vital functions Living beings INTERACTION Living beings relate with their surroundingenvironment.Animals have receptorsand effectors.Plants do not havereceptors, but theycan respond to stimuli.GO BACK
7 Vital functions Living beings REPRODUCTION New individual living beings are produced.Asexual reproduction:one parentSexual reproduction:male and female parentsGO BACK
8 Biomolecules Organic molecules mineral salts water calcium, iron, magnesium, etc.
9 Anthony van Leeuwenhoek History of cell discovery1665Robert Hookemicroscopecork under a microscope1675Anthony van Leeuwenhoekmicroscope“animacules”He was the first person to use the word “cell”.He discovered tiny organisms in a drop of water.
10 The cell is the structural and functional unit of all living things. History of cell discovery1838Matthias J. SchleidenandTheodor SchwannCELLTHEORYThe cell is the structural and functional unit of all living things.1855Rudolf VirchowCELL THEORYAll cells come frompre-existing cells.
11 Size and shape of cells microscope cell 1 micrometre (μm) equals 0.001 millimetres (mm)
12 Structure and composition of cells mitochondrion1nucleusCLICK ON THE NUMBERS43cell membrane12vacuoles3Golgi body2cytoplasmrough ER4Animal cellnucleus54cell wall123cell membranechloroplast5cytoplasmPlant cell
13 Types of cells Prokaryotic cells bacteria The genetic material is loose in the cytoplasm.NEXT
14 Types of cells Eukaryotic cells Plant cell Animal cell The genetic material is enclosed in a nucleus.nucleusPlant cellAnimal cell