Which structure illustrates an amino acid in proper zwitterionic form?

Cholesterol is shown below, on the left. To the right are two derivatives of cholesterol: cholic acid and vitamin D3. Which of the statements below best describe how cholesterol must be modified to become cholic acid and vitamin D3? ​ To make cholic acid from cholesterol… To make vitamin D3 from cholesterol… a. cholesterol must be oxidized to become more polar. ring B of the steroid skeleton is broken. b. cholesterol must be reduced to become more polar. more carbons must be added to cholesterol. c. cholesterol must be oxidized to become more polar. more carbons must be added to cholesterol. d. cholesterol must be reduced to become more polar. ring B of the steroid skeleton is broken. e. cholesterol must be reduced to become more nonpolar. ring B of the steroid skeleton is broken.

Which choice correctly numbers pinolenic acid (shown below) using the omega system?

How are disaccharides separated into two monosaccharides?

An ester, thioester, or amide can all undergo hydrolysis. Which characteristic do these three reactions have in common?

The circled oxygen in the cyclic structure of glucose corresponds to which boxed oxygen in the linear structure?

Which disaccharide is found in milk?

Which structure is a monosaccharide?

Cellulose and starch are similar in that they are both polymers of glucose. Cellulose, however, forms sheet-like structures, which give rigidity to a plant, whereas starch forms spirals. What accounts for this difference in macroscopic structure?

What is the product of the following amidation reaction?