Question

1. methyl
2. hydroxyl
3. sulfhydryl
4. phosphate
5. carbonyl

match the labels (a, b, c, d, e) with the corresponding functional groups (1 - 5). there are dropdowns for b, e, c, a (with a set to 1, b set to 2 initially). the image shows chemical structures with labeled parts: a (ch₃), c (hs), d (phosphate group), e (carbonyl group), and b (likely a hydroxyl or other group in the structure).

Explanation:

• For E: The group at E is a carbonyl group (C=O), so it matches with 5. Carbonyl.
• For C: The group at C is -SH (sulfhydryl), so it matches with 3. Sulfhydryl.
• For A: The group at A is -CH₃ (methyl), so it matches with 1. Methyl (already given as 1 for A).
• For the dropdown for E: We identify the functional group at E as carbonyl, so we select 5.
• For the dropdown for C: We identify the functional group at C as sulfhydryl, so we select 3.

Answer:

• E: 5. Carbonyl
• C: 3. Sulfhydryl