The Four MacromoleculesATI TEAS 7 cheat sheet

Carbs, lipids, proteins, nucleic acids

11 key facts 3 practice questions Reviewed Oct 2026

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Carbohydrates

Made of C, H, O in about 1:2:1
Monomer: monosaccharide (glucose)
Main job: quick energy

Lipids

Fats, oils, steroids, phospholipids
Not made of repeating monomers; hydrophobic
Jobs: long-term energy, insulation, membranes

Proteins

Monomer: amino acid, joined by peptide bonds
Jobs: enzymes, structure, transport, defense
Shape determines function — denaturing destroys it

Nucleic Acids

Monomer: nucleotide
DNA and RNA — store and transmit genetic information

Key takeaway

Carbs, lipids, proteins, nucleic acids

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The four chambers of the heart are two atria and two:

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