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Polymers, carbohydrates and lipids GapFill

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 EnzymesUnimersUnitsMonomers are small molecules which join together to form polymers. Some examples include:

  •  monosaccharidesmonocarbsglyceridesfatty acids, which form carbohydrates

  • amino acids, which form  proteinsamidesnitratesnucleic acids

  •  ribosomeschromosomesphosphatesnucleotides, which form DNA and RNA
  • Molecules often join together in  gluconeogenesiscondensationmerginghydrolysis reactions, and can be separated by  condensationdissolutionhydrolysisliquidation under the action of water.

    There is a range of different carbohydrates used in nature, but many are based on the six-carbon sugar  maltoselactosefructoseglucose, which comes in both an alpha form and a beta form. When two of these molecules form  an estera glycogenica sucrosica glycosidic bond, the disaccharide maltose is formed. Alternatively, sucrose is formed when  fructose and lactoseglucose and fructoseglucose and galactoseglucose and lactose join. An example of a longer carbohydrate, called a polysaccharide, is  saccharosestarchamylopectinglycogen, which is used as a storage molecule in animals because it is highly branched and insoluble.

     LipidsProteinsNon-reducing sugarsReducing sugars, which can be identified with a positive result of the emulsion test, are also good storage molecules. Triglycerides consist of a  celluloseglycerolglycinestarch molecule bonded to three fatty acids by ester bonds.  AlkanesPhospholipidsAlkenesDiglycerides are similar structures, but one of the fatty acids is replaced by a phosphate group, which means they are  hydrophobicpolaracidicunsaturated molecules. They form a  suspensiondroplethelixbilayer in cell membranes, with the fatty acids facing away from the water.

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