Question

A cell's digestive enzymes are enclosed in a membrane bound organelle. How can these molecules function of a plasma membrane

Answer 1

The membrane bound organelle you refer to is the lysosome. The lysosome fuses with a vacuole where it digest the contents.

Answer 2

A cell digestive enzymes are enclosed in a membrane bound organelles known as Lysosomes. Lysosome contains about 50 different types of enzymes which helping in breakdown of different types of biological molecules such as Protein, carbohydrates, nucleic acid and lipids.

Cells transporting the material into lysosome where digestive enzymes are present. Now the molecules are digested by enzymes after that these digested molecules are going back to the cytosol for use by the cell.

Enzymes which are present in lysosome require acidic environment to function in proper manner.