Cells A Crash Course

Hooke (1665) Leeuwenhoek (1675) History Hooke (1665) Leeuwenhoek (1675)

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

Very simple Ex. Bacteria Complex Ex. Plants, animals and more Types of cells PROKARYOTES EUKARYOTES Very simple Ex. Bacteria Complex Ex. Plants, animals and more

Any organism that is made of only one cell 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 that we will focus on: Cell membrane Nucleus Mitochondria Chloroplast

Phospholipid bilayer Controls what goes in and out of a cell Cell membrane Phospholipid bilayer Controls what goes in and out of a cell

Stores DNA “brains” of the cell Manages cell functions 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 membrane Nucleus DNA Cell wall Chloroplast

Where are cells? Atom Molecule Biomolecule Organelle Cell Tissue Organ Organ System Organism (body)

Where are cells?