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Chemistry
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Alphabetical index
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Optical isomers
Optical isomers are molecules differing in their optical ...
Optimum pH
The optimum pH of a medium is the pH at which an enzyme is ...
Organic phosphate group
An organic phosphate group is the group (-PO4-) bound to an ...
Oside
Osides are polymers of monosaccharides formed by ...
Osmolarity
Osmolarity is defined as the number of particles per litre ...
Osmosis
Osmosis is the passage of solvent molecules, generally ...
Oven
An oven is a heated enclosure that is usually used in air ...
Oxidase
Oxidase is the enzyme responsible for an oxidation; as each ...
Oxidation
Oxidation is the loss of one or more electrons by a ...
Oxidised substance
An oxidised substance is a molecule that has lost one or ...
Oxidoreductase
Oxidoreductase is an enzyme that catalyses a redox reaction. ...
Oxygen
Oxygen is the gas essential to the metabolism and survival ...
Ozone
Ozone is a gas with three atoms of oxygen in each molecule. ...