CELLS A Crash Course HISTORY Hooke 1665 Leeuwenhoek

CELLS A Crash Course

HISTORY Hooke (1665) Leeuwenhoek (1675)

CELL THEORY WHO developed cell theory? • Schleiden (1838) • plants • Schwann (1839) • animals • Virchow (1855) • Cells make other cells WHAT is cell theory? 1. All living things are made of cells 2. Cells are the basic unit and structure of all living organisms 3. Cells only come from existing cells

TYPES OF CELLS PROKARYOTES EUKARYOTES Very simple Ex. Bacteria Complex Ex. Plants, animals and more

TYPES OF ORGANISMS UNICELLULAR MULTICELLULAR Any organism that is made of only one cell Any organism that is made of more than one cell Human = 100 TRILLION!!

ORGANELLES Organelles that we will focus on: 1. Cell membrane 2. Nucleus 3. Mitochondria 4. Chloroplast

CELL MEMBRANE Phospholipid bilayer Controls what goes in and out of a cell

NUCLEUS Stores DNA “brains” of the cell Manages cell functions

MITOCHONDRIA Folded inner membrane Converts energy stored in food into usable energy (ATP) Cellular respiration

CHLOROPLAST Stacked sacs (thylakoids) Contain chlorophyll Convert energy in sunlight into energy stored in glucose Photosynthesis

TWO TYPES OF MULTICELLULAR ORGANISMS ANIMALS PLANTS Cell membrane Nucleus DNA Cell wall Chloroplast

WHERE ARE CELLS? Atom Molecule Biomolecule Organelle Cell Tissue Organ System Organism (body)

WHERE ARE CELLS?