10182010 Robert Hooke in 1665 first called the

10/18/2010

Robert Hooke in 1665 first called the tiny chambers he saw in a microscope cells. All living things are made out of cells! Cells contain living matter. CELLS MAKE UP EVERY LIVING THING! Plants are made of CELLS! Animals are made of CELLS! Bacteria are CELLS! Can we see them? Most cells are very small so we can’t see them without a microscope BUT a chicken egg is just one large cell. .

� What do cells have to do with life? 1. All living things are composed of cells (you, me, plants, bugs, fish, Spiderman, Colonel Sanders, Jimmy Neutron, Bacteria, Yeast, Jackie Chan) 2. Cells are the basic units of structure and function in living things (what keeps us upright and helps us live, basically small workers responsible for how we function!) 3. New cells are produced from existing cells (they can’t just appear out of thin air…cells make new cells by dividing!)

Classifications of Life: All life is classified into three Domains… Bacteria Archaea Eukarya Each domain is divided into Kingdoms. There are six different Eubacteri Animali Archaekingdoms… Protista Plantae Fungi a bacteria a It’s important to note that both Eubacteria and Archaebacteria are Bacteria Prokaryotes. Allin. Prokaryotes are single-celled and include all found Unicellular Consist of extreme types of bacteria. Eubacteria and Archaebacteria are much more Bacteria we Eukaryotes: complex environment Mushrooms, see genetically varied Algae and. Plants, Fungus, and Animals, cells, are all s such asthan hot Protists, Flowering mold, everyday. boiling slime molds. heterotroph plants, mildew. which is why bacteria are divided into two kingdoms. Like water and Odds and s. Things mosses, and CANNOT streptococci thermal ends animals like tigers, Let’s look at some examples of organisms in each kingdom… ferns make their (causes strep throat). vents with no oxygen or highly acid environment s. (complex but are unicellular) own food bears, penguins, humans, etc.

You’re the scientist: Let’s figure out the difference between Prokaryotes and Eukaryotes! With a partner, complete the questions on your notes by examining the images. If you finish early, compare your results with another group.

� Both Have: �Cytoplasm �Ribosomes �Plasma Membrane �With Plants: Cell Wall �With (some) Animals: Flagella � Prokaryotes do not have a nucleus! � Eukaryotes are more complex � Eukaryotes are larger

� From Greek words… �EU means TRUE. �PRO means BEFORE. �KARYON means NUCLEUS. � All Eukaryote = TRUE NUCLEUS; Prokaryote = BEFORE NUCLEUS. cells have DNA, in eukaryotes it is stored in the nucleus. � Prokaryotes don’t have a nucleus, and it floats around in the cytoplasm in things called nucleoids. � Only eukaryotes have membrane-bound organelles.

Statement 1. Have a nucleus 2. Have membrane-bound organelles 3. Contain genetic material (DNA) 4. Can be single or multi-celled 5. Can only be single-celled. 6. Have a plasma membrane and cytoplasm Prokaryotic Eukaryotic

� Cells make up tissues which make up organ systems which make up organisms � We can also take it back to the atomic level. .