Carbohydrates: main energy sourse, C, H, O (1:2:1 ratio), Subunit:  monosaccharide, starch, cellulose, glucose, glycogen, lactose, many end in -ose, Indicators: iodine and Benedict's, Lipids: long term energy storage, C, H, O (mostly C-H), Subunit: fatty acids and glycerol, provides padding and insulation, surrounds cells (makes up cell membrane), phospholipid, fats, waxes and oils, cholesterol and steroids , insoluble in water, Indicator: Sudan and brown paper bag, Proteins: regulates cell processes, C, H, O, N, Subunit: amino acids, breaks down substances, maintains structure and support, enzymes, some end in -ase, made on ribosomes, can be denatured by temperature or pH changes, Indicator: biruet (made of sodium hydroxide and copper sulfate), Nucleic Acids: creates proteins, C, H, O, N, P, Subunit: nucleotides, contains genetic blueprint, DNA, RNA, ATP, cellular energy created by respiration, largest of the four macromolecules, No indicator,

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