Basic Building Block of Life

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Presentation transcript:

Basic Building Block of Life Cells Basic Building Block of Life

Cell Theory Cells are the basic units of structure & function in living organisms. All living organisms are composed of 1 or more cells. Schleiden: all plants composed of cells Schwann: all animals composed of cells All cells come from preexisting cells. Virchow contributed this.

Prokaryotes First life form: Archaea & Bacteria Note cell wall & cytoplasmic membrane No membrane-bound organelles DNA in nucleoid Ribosomes present Errors in figure Flagellum, singular Cytosol

Different Cell Types

Eukaryotes Protists, Fungi, Plants, & Animals Have membrane-bound organelles Nucleus with nucleolus Endoplasmic reticulum: rough & smooth Golgi apparatus Mitochondrion Chloroplasts, Chromoplasts, & other plastids Vacuoles: plants’ 1 central vacuole; animals- many Vesicles: lysosomes, peroxisomes, glyoxysomes

Characterized Animal Cell

Blood Cell Types & Their Development

Things to know for the Exam Cell types Structure-function relationship Form follows function. Size varies greatly. Organelles specific for animals vs. plants Function of all organelles. Plasma membrane structure & function.

Cell membrane: Fluid mosaic model