Answer Happy

Please provide the answer for question 4 and 5.
Question 4 Not yet answered Points out of 1.00 P Flag question Which chemical group do you use to differentiate an aldose from a ketose? Select one: O a. carboxyl O b. methyl C. carbonyl O d. hydroxyl Question 5 Not yet answered Points out of 1.00 P Flag question Which action could produce a carbonyl group? Select one: O a. the replacement of the nitrogen of an amine with oxygen b. the replacement of the -OH of a carboxyl group with hydrogen O c. the addition of a hydroxyl to a phosphate O d. the addition of a thiol to a hydroxyl