This checkpoint tests Block A: what disease is, the types of pathogens, how disease spreads, and the first line of defence.
This checkpoint assesses your understanding of Block A.
What disease is; infectious vs non-infectious; health, disease and disorder defined.
Stable internal conditions (homeostasis); assessed within the lesson, not the checkpoint MC.
System interactions and feedback (homeostasis); assessed within the lesson, not the checkpoint MC.
Types of pathogens: bacteria, viruses, fungi, protists, parasites, and the toxins they release.
How disease spreads: transmission routes, vectors, and quarantine.
First line of defence: skin, mucous membranes, lysozyme, stomach acid, cilia.
1. Which of the following is an infectious disease?
2. What is the main difference between infectious and non-infectious diseases?
3. Which pathogen is responsible for causing COVID-19?
4. Malaria is spread by a mosquito that carries the pathogen from person to person. The mosquito is best described as a:
5. Which of these is part of the body's first line of defence?
6. A student has a cut on their hand. Which first-line defence has been breached?
7. What is the main purpose of quarantine?
8. Why can non-infectious diseases like type 2 diabetes not be caught from another person?
9. A food handler does not wash their hands and prepares a salad. Which transmission route is most likely?
10. A remote community has high rates of skin infections but low rates of influenza. Which explanation is most likely?
11. Define disease and explain the difference between infectious and non-infectious diseases. Give two examples of each. 4 MARKS
12. Explain how a pathogen such as influenza virus causes disease in the human body. Include how it enters, multiplies, and produces symptoms. 4 MARKS
13. Compare the first line of defence with the second and third lines. Explain why the first line is considered non-specific while the later lines are specific. 4 MARKS
Tick when you have finished all questions and reviewed your answers.