Chitin Is the Main Component of the Cell Walls of Fungi

Multiple Choice

Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods and insects and the radula of mollusks. Which statements are true? I) Chitin is made from an aminosugar.
II) Chitin contains amide bonds.
III) Chitin is a macromolecule
IV) Chitin is structurally related to cellulose

A) all of the above
B) I, II, and IV
C) I, II, and III
D) II, III, and IV