4299888
| Question | Answer |
| -Is polar as a result of the electrons spending more times near the electronegative oxygen atom -Can form Hydrogen bonds with water molecules, helping dissolve organic compounds such as sugars | Hydroxyl |
| -A ketone and an aldehyde may be structural isomers with different properties, as is the case for acetone and propanal -Ketone and aldehyde groups are also found in sugars, giving rise to two major groups of sugars: ketoses and aldoses | Carbonyl |
| -Acts as an acid; can donate H+ because the covenant bond between oxygen and hydrogen is so polar -Found in cells in the ionized form with a charge of 1- and called a carboxylate ion | Carboxyl |
| -Acts as a base; can pick up H+ from the surrounding solution (water, in living organisms) -Found in cells in the ionized form with a charge of 1+ | Amino |
| -two of these groups can react, forming a covalent bond. this "Cross- linking" helps stabilize protein structure -the Cross link can cause curly hair | sulfhydryl |
| -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 -Molecules containing this groups have the potential to react with water, releasing energy | phosphate |
| -addition of this group to DNA, or to molecules found to DNA, affects the expression of the genes -arrangement of these groups in male and female sex hormones affect their shape and function | methyl |
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