Cells. What is a cell? A cell is a membrane bound unit containing hereditary material and other compounds that make metabolism, growth and reproduction possible. Hereditary material. Plasma membrane. Cytoplasm. Cells. Overview of cell structure Cells are surrounded by a plasma membrane.
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A cell is a membrane bound unit containing hereditary material and other compounds that make metabolism, growth and reproduction possible.
Examined cork in simple microscope.
Saw empty compartments and
called them ‘cellulae’ (small rooms).
Made his own microscope that could magnify 200 X.
Observed living things.
Called them ‘Animacules’ (little animals).
Concludes that all plants are made of cells or their derivatives.
He called this theory phytogenesis
All animal tissue is made of cells and within an organism these cells are identical.
Studied pathenogens and concluded
‘omnis cellula e cellua’ which means that all cells arise from pre-existing cells.
small cube - surface area
small cube - volume
6 x (10 m x
10 m) = 600 m
10 m x 10 m x 10 m = 1000 m
6 x (30 m x 30 m) = 5400 m
30 m x 30 m x 30 m = 27000 m
1 small = 600 m
27 small = 16.200 m
1 big = 5400 m