Question

Lysosome enzymes are active at pH

• A. 5
• B. 7
• C. 8
• D. Variable

Answer 1

The correct option is A 5

• Lysosomes are membrane-bound organelles which are capable of breaking down biomolecules such as proteins, nucleic acids, carbohydrates and lipids.
  
• They contain digestive enzymes that digest excess or worn out organelles, food particles, engulfed viruses or bacteria and macromolecules.
• The pH of the interior of lysosome ranges from 4.5 - 5 (acidic in nature).
• All the enzymes of the lysosome are acid hydrolases and are active at the acidic pH (pH= 5) which is maintained within lysosomes.
  
• So, the correct answer is '5'.