Question

the models show the chemical structures of an amino acid and a monosaccharide. complete the table to compare these structures. is a building block of cellulose contains hydrogen has a carboxyl group

Explanation:

Step1: Recall cellulose composition

Cellulose is a polysaccharide made of glucose (a monosaccharide) units. Amino - acids are building blocks of proteins, not cellulose. So for "Is a building block of cellulose", amino acid is No and monosaccharide is Yes.

Step2: Analyze hydrogen presence

Looking at the chemical structures, both the amino - acid and the monosaccharide have hydrogen atoms in their formulas. So for "Contains hydrogen", both are Yes.

Step3: Identify carboxyl group

The amino - acid has a carboxyl group (-COOH) at the end of its structure, while the monosaccharide does not have a carboxyl group. So for "Has a carboxyl group", amino acid is Yes and monosaccharide is No.

Answer:

	Amino acid	Monosaccharide
Contains hydrogen	Yes	Yes
Has a carboxyl group	Yes	No