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| 8193235281 | Isotopes | different neutron number | 0 | |
| 8193240760 | Covalent bonds | shared electrons | 1 | |
| 8193246950 | Polar covalent bonds | unevenly shared electrons | 2 | |
| 8193321171 | Ionic Bonds | one atom gives up electrons for another | 3 | |
| 8193251880 | non polar covalent bonds | evenly shared electrons | 4 | |
| 8193257186 | hydrolysis | break apart a molecule using water | 5 | |
| 8193261119 | dehydration reaction | combine molecules by taking out water | 6 | |
| 8193267624 | Lipid monomers | glycerol and 3 fatty acids | 7 | |
| 8193278515 | Protein monomers | amino acids; polypeptides and dipeptides | 8 | |
| 8193294576 | Carbohydrate monomers | monosaccarides (glucose) , disaccarides (sucrose/fructose/lactose) and polysaccarides (starch/celluose) | 9 | |
| 8193303442 | Nucleic Acids monomers | nucleotides; nitrogen base, 5-carbon sugar, and phosphate group | 10 | |
| 8193385871 | Lipids structure | many H's and C' | 11 | |
| 8193394586 | Carbohydrates structure | H:O = 2:1 | 12 | |
| 8193397369 | Protein structure | guanine and alanine | 13 | |
| 8193408572 | Nucleic acid structure | A T C G double helix | 14 | |
| 8193426087 | Amino group | -NH₂ | 15 | |
| 8193430262 | Carboxyl group | -COOH | 16 | |
| 8193433031 | Hydroxyl group | -OH | 17 | |
| 8193439530 | Phosphate group | -OPO₃²⁻ | 18 | |
| 8193443245 | Carbonyl group | >C=O | 19 | |
| 8193447853 | Methyl group | -CH₃ | 20 | |
| 8193793200 | non-polar side chains in amino acids are | hydrophobic | 21 | |
| 8193795460 | polar side chains in amino acids are | hydrophilic | 22 | |
| 8193799748 | electrically charged side chains in amino acids are | hydrophilic | 23 |
