As phospholipids, phosphate is an important component of cell membranes. It is also a major component of biological molecules such as ATP and nucleic acids.
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Insoluble
Lipids; Polysaccharides; (Starch, Glycogen and cellulose) (won't affect the water relations of the cell) ; Fatty acids:
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Insulation
Fats are important for insulation; stored in a layer below the body surface in many animals.
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Iodine test
Used to detect starch; Positive test = yellow-brown to blue-black; Weak solution of iodine could be used to calibrate a calorimeter if testing for amylase breaking down starch to maltose; Used as a stain in order to view species under the microscope.
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Ion Channel Protein
(ion) channel proteins: channels formed by proteins with a central pore that enables ions to pass through; Some are permanently open but others are gated. Gated channels can open or close allowing control of ion movement.
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Ionic bond
Formed between amino and carboxyl groups in some of the amino acid R-groups. They are stronger than H bonds but are damaged by changes in pH.
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Iron
Fe2+ : Part of a haem group in haemoglobin and is an important constituent of electron carriers in respiration.
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Isomer
Isomers are two molecules with the same molecular formula but differ structurally. Therefore, isomers contain the same number of atoms for each element, but the atomic arrangement differs.
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Other cards in this set
Card 2
Front
Inorganic phosphate
Back
As phospholipids, phosphate is an important component of cell membranes. It is also a major component of biological molecules such as ATP and nucleic acids.
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