9700 · 10.1
Infectious diseases
Welcome to this lesson on **Infectious Diseases**! This topic is fundamental for understanding how illnesses spread and how our bodies, and indeed society, combat them. We'll break down the essentials of **pathogens**, **transmission**, and **disease control**, giving you the confidence to ace those Paper 1 multiple-choice questions and structure clear answers for Paper 2. Key points align with **A-Level Notes** 9700 Biology chapter **10** (topic **10.1**). Notes and diagrams from **A-Level Notes** chapter **10**, topic **10.1** (2 pages).
Need to know
What you need to know
- Define key terms like pathogen, infectious disease, epidemic, pandemic, and endemic.
- Identify and distinguish between the four main types of pathogens: viruses, bacteria, protoctista, and fungi.
- Explain and provide examples of direct and indirect modes of infectious disease transmission.
- Describe the transmission cycle and control methods for malaria and cholera as specific examples of infectious diseases.
Explanation
Infectious diseases
- Define key terms like pathogen, infectious disease, epidemic, pandemic, and endemic.
- Identify and distinguish between the four main types of pathogens: viruses, bacteria, protoctista, and fungi.
- Explain and provide examples of direct and indirect modes of infectious disease transmission.
- Describe the transmission cycle and control methods for malaria and cholera as specific examples of infectious diseases.