Year 9 Science · Unit 1 · Lesson 5

Checkpoint: Disease Concepts L01–L04

Foundation Worksheet

Name

Date

Class

Learning Goals

Recall key vocabulary from Lessons 1–4: disease definition, pathogen types, transmission, and first-line defences.
Categorise examples across the four main topic areas studied.
Identify connections between unit concepts.

Warm Up

Fill the gap

Choose the correct word from the word bank to complete the paragraph. Two words will NOT be used.

infectious non-infectious virus bacteria direct contact mucus skin antibody vaccine

A disease caused by a pathogen that can be spread from one host to another is called an disease. In contrast, type 2 diabetes is a disease because it cannot be passed on by contact. The pathogen responsible for influenza is a , while the pathogen that causes tuberculosis is a type of . One common transmission route for influenza is with respiratory droplets coughed or sneezed by an infected person. Once inhaled, pathogens encounter the first line of defence, sticky in the respiratory tract traps them, while intact prevents most pathogens from entering the body through the outer surface.

Your Turn

Sort it!

Write each item from the pool into the correct category box.

Heart disease HIV Fungus Typhoid fever Cilia Droplet transmission Helminth (tapeworm) Cancer Fomites (contaminated surfaces) Stomach acid Parasite Vector (e.g. mosquito) Skin (keratinised) Asthma

Types of Disease (non-infectious)

Pathogen Types

Transmission Routes

First Line Defences

Show What You Know

1. State the difference between an infectious disease and a non-infectious disease. Give one example of each.

Recall 2 marks

2. Name two transmission routes and explain how each one allows a pathogen to move from an infected host to a new host.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?