Question

3.1.9 - 12.f
choose words to complete the sentence
two amino acids unite by forming a(n)

bond between them and releasing a molecule of

. the union of many
amino acids forms a macromolecule called a

(protein / nucleic acid / carbohydrate / lipid).

Explanation:

Amino acids are the building blocks of proteins. When two amino acids combine, they form a peptide bond through a condensation reaction, releasing a water molecule. Multiple amino acids linked together form a polypeptide chain, which folds into a protein.

Answer:

First blank: protein; Second blank: peptide; Third blank: water.