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Download Cell Size - Hudson City School District
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Cell Size From Smallest to l argest + Prokaryotic Cells Size Comparison Kind of CellSize (approximate) • Bacteria(E. coli) 1 um • Red Blood Cell 8 um • Elodea epidermal cell 65 um • Amoeba 700 um • Hen's egg 50,000 um Smallest Cells • Mycoplasmas bacteria 0.1 -1.0 µm Largest Cells • *Ostrich Egg • Chicken Egg Metrics • • • • • 1 cm = 0.01 m (10-2)m centimeter 1 mm = 0.001 m (10-3)m millimeter 1 µm = 0.000 001 m (10-6)m micrometer 1 nm = 0.000 000 001 m (10-9)m nanometer 1 Å = 0.000 000 0001 m (10-10) Angstrom Longest Cells • Muscle and Nerve Cells Form and Function • Nerve • Long to send impulses Form and Function • Muscle • Move bones Form and Function • Blood Cells • Smooth, travel through blood vessels Form and Function • Skin Cell • Flat top for protection • Cube for cushion • As cells get larger, the surface area to volume ratio ______________________ (increases/decreases). • decreases Prokaryotic Cells Contrasting Nucleoid and Nucleus Which are bigger? • Prokaryotic cells 0.2- 2µm in size • Eukaryotic cells 10- 500µm in size Cocci (spherical) Bacilli (rod) Spiral Cyanobacteria Note the color: green Bacteria Capsule Sticky to adhere to surfaces Prokaryote flagella Swimming Bacteria How Bacteria Swim (animation link) and also one at bottom
