Biology

This lesson helps Year 13 students understand the difference between volunteering, observation and clinical work experience. It introduces UK opportunities, reputable international organisations, ethical concerns such as scope of practice and voluntourism, and practical steps for securing a safe pla

Students investigate how TB bacteria enter the lungs, are engulfed by alveolar macrophages and become enclosed within tubercles. They examine why primary infection is often asymptomatic, how latent TB can reactivate, and how M. tuberculosis prevents phagosome–lysosome fusion to evade destruction. Th