Question 3Why are lysosomes known as suicide bags?

Question

Bright Tutorials · Accepted Answer

Lysosomes contain powerful digestive enzymes capable of breaking down all organic material. During the disturbance in cellular metabolism or any damage to the cell, the lysosomes may burst and the enzymes digest their own cell. Therefore, lysosomes are known as suicide bags of a cell.

Web Content: The Fundamental Unit of Life | Bright Tutorials

.quick-rev { background: linear-gradient(135deg, #eaf2f8, #d6eaf8); border: 2px solid var(--bt-primary-light); border-radius: 10px; padding: 20px; margin: 15px 0; }
    .quick-rev h3 { color: var(--bt-primary); margin-top: 0; }
    .quick-rev ul { margin: 0; padding-left: 20px; }
    .quick-rev li { margin-bottom: 6px; font-size: 0.92rem; }
    .keyword-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
    .keyword-tags span { background: var(--bt-primary-light); color: var(--bt-primary-dark); padding: 3px 10px; border-radius: 12px; font-size: 0.78rem; font-weight: 600; }

BRIGHT TUTORIALS
  BRIGHT TUTORIALSCBSE Class IX | Academic Year 2026-20279403781999Excellence in Education
  Science | Chapter 5: The Fundamental Unit of LifeWeb Content &mdash; Quick Reference
  
    Chapter 5: The Fundamental Unit of Life &mdash; Quick Reference

cell theory
      cell organelles
      plasma membrane
      osmosis
      plant cell
      animal cell
      nucleus
      mitochondria

Quick Revision Points
      
        Cell theory: all organisms made of cells; cell = basic unit; cells from pre-existing cells
Prokaryotic (no nuclear membrane, bacteria) vs Eukaryotic (true nucleus, plants/animals)
Plasma membrane: selectively permeable, lipid bilayer
Osmosis: water from dilute → concentrated through semipermeable membrane
Organelles: Nucleus (control), Mitochondria (powerhouse), ER (transport), Golgi (packaging), Lysosomes (suicide bags), Plastids (photosynthesis), Vacuoles (storage)
Plant cell: cell wall, large vacuole, plastids present. Animal cell: no cell wall, centrioles present

Exam Tips for Chapter 5
      
        Read the detailed chapter notes for complete coverage of all NCERT topics.
        Practice all NCERT in-text and back exercise questions &mdash; they are frequently asked in exams.
        Focus on comparison tables, diagrams, and definitions &mdash; these are high-scoring areas.
        For numericals (if applicable), practice at least 20 problems of varying difficulty.
        Refer to the practice question bank (200+ questions) for thorough preparation.

Related Resources
      
        Detailed Notes: ch05-the-fundamental-unit-of-life.html
        Practice Questions: 100+ questions with answers in 05-practice-questions/
        Chapter Test: 30-mark test paper in 06-tests/chapter-tests-30marks/
        Formula Sheet: Complete formula reference in 03-teacher-aid/formula-sheet.html

BRIGHT TUTORIALSContact: 9403781999 | CBSE Class IX Coaching | 2026-2027

The Fundamental Unit of Life — Question 3

Question 3

Chapter 5: The Fundamental Unit of Life — Quick Reference

Quick Revision Points