Effectiveness of disinfectants
This is another practical lesson on comparing the size of clear zones when discs of different disinfectant is applied onto an agar plate with bacteria.
Video
Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:
- Click "Close Video"
- Click "Next" to view the activity
Your video will re-appear on the next page, and will stay paused in the right place.
Worksheet
These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.
Lesson summary: Effectiveness of disinfectants
It looks like you have not completed one of the quizzes.
To share your results with your teacher please complete one of the quizzes.
The next lesson in Cell biology is "Stem cells and the use of stem cells"