Chapter 9 / 6 short lessons
Infectious diseases
Separate the pathogen from the disease, trace how it spreads, and explain how vaccines and antibiotics act differently.
G3 Pure Biology / K325 / 2027 syllabus
What do you think?
Influenza is caused by a virus. Why does an antibiotic not treat the influenza virus?
Lessons
0 of 6 marked as readPathogen, disease and route
Distinguish infectious from non-infectious disease and identify routes of pathogen transmission.
About 5 minBacteria and viruses
Compare a typical bacterium and virus, including their genetic material and reproduction.
About 5 minInfluenza and pneumococcal disease
Identify the causes and typical signs or symptoms of influenza and pneumococcal disease.
About 5 minBreaking the transmission chain
Explain how influenza and pneumococcus spread and how transmission can be reduced.
About 5 minVaccination and immune memory
Explain how vaccination prepares white blood cells for a later encounter with a pathogen.
About 5 minAntibiotics and resistance
Explain antibiotic targets and how selection increases the proportion of resistant bacteria.
About 6 minWhat you will be able to do
- Distinguish a pathogen, its disease and its transmission route.
- Compare bacterial and viral structure and reproduction.
- Explain vaccination using immune memory.
- Explain antibiotic action and the selection of resistant bacteria.