These are membrane bound vesicular structures formed by the process of packaging in the golgi apparatus. The isolated lysosomal vesicles have been found to be very rich in almost all types of hydrolytic enzymes (hydrolases – lipases, proteases, carbohydrases) optimally active at the acidic pH. These enzymes are capable of digesting carbohydrates, proteins, lipids and nucleic acids.
Lysosomes are membrane-bound organelles containing hydrolytic enzymes (proteases, lipases, carbohydrases) that work best at acidic pH. NTA frequently tests whether students know these enzymes are optimally active in acidic conditions, not neutral or basic pH. Many students confuse lysosomal pH with cytoplasmic pH or forget that enzyme activity depends on pH. Remember: lysosomes maintain an acidic internal environment (pH 4.5-5), which is essential for enzyme function and cellular digestion. If NTA asks about optimal pH for lysosomal enzymes or why lysosomes don't digest themselves, the answer always involves acidic pH.
This paragraph was tested 4 times in NEET.
If the pH in lysosomes is increased to alkaline, what will be the outcome? NEET 2022 Phase 2
Which of the following statements about lysosomes is not correct? NEET 2019
Which one of the following cell organelles is enclosed by a single membrane? (NEET 2016 Phase 1)
A cell organelle containing hydrolytic enzymes is: (NEET 2016 Phase 2)
MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.