[Campbell Biology P.957] According to Figure 41.11, which of the following pairs correctly m... | Practice Question

According to Figure 41.11, which of the following pairs correctly matches a macromolecule type with its final absorbable products and the primary enzymes responsible for the final breakdown in the small intestine from the intestinal epithelium ?

  • A: Carbohydrates: Monosaccharides; Disaccharidases.
  • B: Proteins: Amino acids; Pancreatic carboxypeptidase.
  • C: Nucleic Acids: Nucleotides; Pancreatic nucleases.
  • D: Fats: Glycerol, fatty acids, monoglycerides; Pancreatic lipase.

Explanation

According to Figure 41.11, Disaccharidases from the intestinal epithelium are responsible for the final breakdown of disaccharides into absorbable monosaccharides. For proteins, the final breakdown to amino acids involves Dipeptidases, carboxypeptidase, and aminopeptidase from the intestinal epithelium. For nucleic acids, the final breakdown to nitrogenous bases, sugars, and phosphates involves Nucleosidases and phosphatases from the intestinal epithelium. For fats, pancreatic lipase from the pancreas produces the final absorbable products, and the diagram does not show intestinal epithelium enzymes for fat digestion.