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phenotype:
The observable character of a cell or an organism.
phosphatase:
see phosphoprotein phosphatase
phosphatidylinositol:
An inositol phospholipid.
phosphodiester bond:
A covalent chemical bond formed when two hydroxyl groups are
linked in ester linkage to the same phosphate group, such as
adjacent nucleotides in RNA or DNA.
phosphoinositide:
see inositol phospholipid
phospholipid:
The major category of lipid molecules used to construct biological
membranes. Generally composed of two fatty acids linked through
glycerol phosphate to one of a variety of polar groups.
phosphoprotein phosphatase:
Enzyme that removes a phosphate group from a protein by hydrolysis.
phosphorylation:
Reaction in which a phosphate group becomes covalently coupled
to another molecule.
photon:
Elementary particle of light and other electromagnetic radiation.
Photosynthesis:
Process by which plants and some bacteria use the energy of
sunlight to drive the synthesis of organic molecules from carbon
dioxide and water.
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