Year 9 Science · Unit 1 · Lesson 20

Unit 1 Synthesis and Depth Study Preparation

Foundation Worksheet

Name

Date

Class

Learning Goals

Recall and connect key vocabulary from across the whole Disease unit
Organise concepts from Unit 1 into the four major themes of the unit
Demonstrate understanding of the disease system from pathogen through to public health

Warm Up

Fill the gap

Choose the correct word from the word bank to complete each sentence. Two words in the bank will not be used.

pathogens adaptive antibiotics herd immunity inflammation epidemiology non-infectious secondary antigens quarantine

Bacteria, viruses, fungi, parasites and prions are all examples of agents that can cause disease in a host. When the body is infected, occurs as a second-line response, bringing increased blood flow and white blood cells to the infected site. The third line of defence is the immune system, which produces specific antibodies against foreign proteins called . When enough people in a community are immune to a disease, either through vaccination or prior infection, the population achieves , which protects those who cannot be vaccinated. Cancer and cardiovascular disease are examples of diseases: they are not caused by pathogens and cannot be transmitted between people. is the scientific study of disease patterns in populations, including who gets sick, where, and why. Isolating someone who has been exposed to a contagious disease before symptoms appear is called .

Your Turn

Sort it!

Write each concept from the pool into the correct theme box. Each concept belongs in exactly one theme.

Bacteria Vaccination Phagocytes Surveillance (NNDSS) Droplet transmission Memory B cells Antibiotic resistance Inflammation Plain packaging Vector transmission T killer cells Prions Quarantine Skin and mucus Antiviral drugs Herd immunity

Pathogens & Transmission

Body Defences

Treatments & Vaccines

Public Health & Prevention

Show What You Know

1. A person is infected with influenza virus. Describe two different defence responses their body mounts, one from the second line and one from the third line, and explain what each response does.

Recall 4 marks

2. A student confuses "infectious disease" and "non-infectious disease". Write a clear definition of each term and give one example of each from Unit 1.

Recall 4 marks

Wrap Up

In one sentence, what is the most important idea that connects everything you studied in Unit 1?