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Where do cells come from
3.5 million years ago life appeared
Ancient seas were filled with chemicals (amino acids)
The Cell Theory
All life forms are made from one or more cells. Cells only arise from preexisting cells.
Cell organization
Classified as eukaryotes or prokaryotes
Viruses
Viruses are merely genetic information surrounded by a coat of protein. They require most cells to reproduce.
Energy in the cell
Cellular respiration is the process where the chemical energy of "food" molecules is released and partially captured in the form of ATP. Carbohydrates, fats, and proteins can ask be used as fields in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved.
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