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Cell - fundamental unit of Biology, building block of all organisms

1) Unicellular: 1 cell = 1 organism

2) Multicellular: 1036 cells = 1 organism, different cells for different

functions, exhibit division of labor

C) Diversity of cells

1) Different types of unicellular organisms (Paramecium and Amoeba)

2) Different types of cells in multicellular organisms

(muscle, skeletal, immune, lungs, epithelium, etc...)

D) Classification of cells

1) Two major groups - Prokaryotes and Eukaryotes

2) Differences: Prokaryotes - smaller size, simple structure

(no membrane bound organelles, no nucleus, DNA in a

single strand), primitive (old group of organisms,

nearest relatives of first living organisms)

E) Structural and functional differences between Prokaryotes and Eukaryotes F) Movement across cell membranes

1) Passive transport (no energy)

diffusion 2) Active transport

active transport with ATP

exocytosis and endocytosis

3) Effects of tonicity

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