front 1 -Is polar as a result of the electrons spending more times near the electronegative oxygen atom
| back 1 Hydroxyl |
front 2 -A ketone and an aldehyde may be structural isomers with different properties, as is the case for acetone and propanal
| back 2 Carbonyl |
front 3 -Acts as an acid; can donate H+ because the covenant bond between oxygen and hydrogen is so polar
| back 3 Carboxyl |
front 4 -Acts as a base; can pick up H+ from the surrounding solution (water, in living organisms)
| back 4 Amino |
front 5 -two of these groups can react, forming a covalent bond. this "Cross- linking" helps stabilize protein structure
| back 5 Sulfhydryl |
front 6 -Contributes negative charge to the molecule of which it is a part (2- if at the end of a molecule, 1- when located internally in a chain
| back 6 phosphate |
front 7 -addition of this group to DNA, or to molecules found to DNA, affects the expression of the genes
| back 7 Methyl |