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The Cell The Cell • Structural & functional unit of living organisms The Cell Eukaryotic (with membrane bound nucleus) Prokarotic (without membrane bound nucleus) A Typical Animal Cell • • • • • • • Nucleus Nucleolus Mitochondria Endoplasmic Reticulum Golgi Apparatus Peroxisomes Lysosomes A Typical Plant Cell • • • • • • • In addition to what an animal cell contains: Cell Wall Chloroplast Amyloplast Vacuole Plasmodesmata Centrioles 5 Kingdom Classification (old) • Monera (Prokaryota)- Bacteria • Protista- Small unicellular organisms • Plantae • Animalia • Fungi Cells Studied in the lab • • • • • • • • Oscillatoria Gloeocapsa Lactobacillus Amoeba Paramecium Human Cheek Epithelium Onion Peel Eloeda Directives for Naming Organisms • The first name is always the Genus name • The second name is always the species name • The first letter of the first name is always in upper case & the first letter of the species name is always in the lower case • The name is written in italics or alternatively underlined • e.g. Amoeba proteus OR Amoeba proteus Lactobacillus • Rod shaped • In yogurt • Lives on lactose (milk sugar) Oscillatoria Identifying Characteristics • Long, green filaments • Chloroplasts arranged along periphery Gloeocapsa Identifying Characteristics • Loosely arranged colony of cells • Usually about 6-12 cells in one bundle • Cells are green and round • Colony covered by gelatinous sheath Amoeba Identifying Characteristics • Irregular shape • Pseudopodia (false feet): cytoplasmic extensions that aid in locomotion & phagocytosis (cell eating) • Note: Contractile vacuole is NOT an identifying characteristic peculiar to Amoeba Paramecium Identifying Characteristics • Slipper shaped • Food gullet • Macronucleus & micronucleus • Anterior & posterior contractile vacuole • Cilia That’s it Folks! Get to work!