Curriculum-aligned learning support — not an official school, university, or ministry-approved course, and not a replacement for official credit.

Unit 3Lesson navigation

Grade 11 · Biology

Viruses & human disease

Why it matters

Infection, spread, vaccines and antivirals.

Core20m readingPrerequisite: The lytic & lysogenic cycles

🔒

This feature is available in the School Plan.

Upgrade to unlock the full lesson, examples, quiz and practice.