Acid mucopolysaccharides include forms such as carboxylated, sulfated and what else?

• A. Sulfated and carboxylated
• B. Sulfated only
• C. All of the above forms
• D. Carboxylated

Answer: (C)

Acid mucopolysaccharides are glycosaminoglycans that carry negative charges from sulfate groups and carboxyl groups. Because of these charged features, they occur in multiple forms: some are sulfated, some are carboxylated, and some have both types of groups. This means the full range of acid mucopolysaccharides includes all of these forms, not just one. For example, hyaluronic acid is carboxylated but not sulfated, while others like certain sulfated mucopolysaccharides carry sulfate groups; and some molecules can have both. The concept is that acid mucopolysaccharides encompass these different forms, which is why recognizing the full spectrum is important.