CONTENTS <ul><li>Vital functions </li></ul><ul><ul><li>Vital functions </li></ul></ul>Biomolecules Biomolecules Cells History of cell discovery Size and shape Structure and composition Types of cells Cellular nutrition Cellular nutrition Autotrophic nutrition Heterotrophic nutrition Photosynthesis Cell division Cell division Genetic material Mitosis THE BASIS OF LIFE Cellular respiration Cellular respiration
RESOURCES Vital functions Biomolecules History of cell discovery Types of cells Structure and composition of cells Cellular nutrition Autotrophic nutrition Heterotrophic nutrition Cell division Genetic material Mitosis Size and shape of cells Cellular respiration Photosynthesis Links Introducing cells
Vital functions VITAL FUNCTIONS Living beings NUTRITION INTERACTION REPRODUCTION
Vital functions NUTRITION Living beings obtain the matter and energy necessary for life. Autotrophic organisms inorganic matter organic matter Heterotrophic organisms Living beings GO BACK
Living beings Vital functions INTERACTION Living beings relate with their surrounding environment. Animals have receptors and effectors . Plants do not have receptors, but they can respond to stimuli. GO BACK
Vital functions REPRODUCTION New individual living beings are produced. Asexual reproduction: one parent Sexual reproduction: male and female parents Living beings GO BACK
water mineral salts Biomolecules calcium, iron, magnesium, etc. Organic molecules
History of cell discovery He was the first person to use the word “cell”. He discovered tiny organisms in a drop of water. 1675 Anthony van Leeuwenhoek microscope “ animacules” 1665 Robert Hooke microscope cork under a microscope
History of cell discovery 1838 Matthias J. Schleiden and Theodor Schwann CELL THEORY The cell is the structural and functional unit of all living things. 1855 Rudolf Virchow CELL THEORY All cells come from pre-existing cells.
microscope Size and shape of cells 1 micrometre ( μm) equals 0.001 millimetres (mm) cell
Structure and composition of cells Animal cell Plant cell 1 1 2 2 3 3 4 4 5 cell membrane cytoplasm nucleus cell membrane nucleus cell wall cytoplasm mitochondrion 1 Golgi body 2 vacuoles 3 rough ER 4 chloroplast 5 CLICK ON THE NUMBERS
Types of cells bacteria Prokaryotic cells The genetic material is loose in the cytoplasm. NEXT
Types of cells Animal cell Plant cell nucleus Eukaryotic cells The genetic material is enclosed in a nucleus.