helper molecules that speed up chemical reactions

amount of energy needed to raise temp of 1 Gram water by 1 degree Celcius

20 proteins made up of small linked units

makes up 65% of body weight

Energy containing nutrients that form part of cell membrane, protect organs and insulate the body.

sugar, major source of energy for body

nutrients not made by living things

Major source of energy, provide raw materials to cell parts

substances in food that provide raw materials

nutirients needed for growth, tissue repair

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