1. Spreading Germs! BTEC Applied Science Level 2
Unit 7: Health Applications of Science
Assignment 2: Immunity and Health Screening

2. Lesson Objectives: To know where harmless bacteria can be found.
To produce a swab plate.
Complete your ‘Immune System’ Poster

3. Starter Activity:
Look around the room, write down the place you think you would find the most bacteria?

4. What do you think?
Keyboard? Door Handle? Rubbish Bin? Why? Do you think these bacteria would be mostly harmful or mostly harmless?

5. Starter Activity 2
Now think about the college as a whole? Where do you think you would find the most bacteria?
Would this be harmful or harmless bacteria?
Why?

6. The Spread of Bacteria
There are bacteria on every surface you can think of. Around 99.9% of this bacteria is completely harmless. In fact some of it may be helpful. Can you think of how we use bacteria to help us?

7. Pathogens Some bacteria can cause disease. These are called pathogens.
You find more of these bacteria in certain areas such as:
Around Toilets
In rubbish bins
On the floor
Around raw meat

8. Today’s Experiment
You are going to set up an agar plate to investigate bacteria on surfaces and/or hands
The agar plate will be incubated and you will check the results on Monday.

9. Swabbing Experiment:

10. Finger Print Experiment

14. Agar Plate Art: