Peroxisomes and Lysosomes: Intracellular Defense

The video tutorial covers the roles of peroxisomes and lysosomes in cellular defense. Peroxisomes help break down hydrogen peroxide using catalase, preventing damage from its reactive nature. The tutorial explains the dangers of hydrogen peroxide, including its reactions with UV light and iron, leading to harmful radicals. Lysosomes are highlighted for their role in phagocytosis, engulfing bacteria and breaking them down using enzymes, acid, and reactive oxidative species. The synthesis of these species is crucial for destroying microbes, showcasing the cellular defense mechanisms.

What is the primary function of peroxisomes in cells?

Explain the role of catalase in the peroxisome.

What are the consequences of hydrogen peroxide accumulation in cells?

Explain the Fenton reaction and its implications in cellular damage.

Describe the process of phagocytosis and its significance in immune response.

Discuss the significance of the low pH environment in lysosomes.

What are reactive oxidative species (ROS) and how do they affect cells?

What is the difference between the functions of peroxisomes and lysosomes?

What mechanisms do lysosomes use to induce apoptosis in bacteria?

How do lysosomes contribute to the destruction of bacteria?