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Cell Size. From Smallest to l a rgest + 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.
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Cell Size From Smallest to largest + Prokaryotic Cells
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
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 Form and Function
As cells get larger, the surface area to volume ratio ______________________ (increases/decreases). • decreases
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
Swimming Bacteria How Bacteria Swim (animation link) and also one at bottom