Uploaded February 2026 | Updated September 2026, 6 hours ago
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-biology-1-triple
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In this video, we start by looking at how we can culture bacteria. We then look at how we can use these techniques to investigate the effect of antibiotics on bacterial growth.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Bacterial culture By Kjaergaard at en.wikipedia [Public domain], via Wikimedia Commons
Agar gel plate By Wikitorre92 - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=45023219
Autoclave By SystecAutoclaves (Own work) [CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons
Innoculating loop By Jeffrey M. Vinocur - Own work, CC BY 2.5, commons.wikimedia.org/w/index.php?curid=729447
Adhesive tape By BarberJP - Own work, Public Domain, commons.wikimedia.org/w/index.php?curid=5040682
Antibiotic discs By CDC/Dr. JJ Farmer (PHIL #3031), 1978. - Obtained from the CDC Public Health Image Library., Public Domain, commons.wikimedia.org/w/index.php?curid=1863159
Cheek cells
commons.wikimedia.org/wiki/File:Cheekcells_stained.jpg
Mulletsrokk, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-biology-1-triple
Teachers, to get PLUS for your school, email schools@freesciencelessons.co.uk
In this video, we start by looking at how we can culture bacteria. We then look at how we can use these techniques to investigate the effect of antibiotics on bacterial growth.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Biology. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Bacterial culture By Kjaergaard at en.wikipedia [Public domain], via Wikimedia Commons
Agar gel plate By Wikitorre92 - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=45023219
Autoclave By SystecAutoclaves (Own work) [CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons
Innoculating loop By Jeffrey M. Vinocur - Own work, CC BY 2.5, commons.wikimedia.org/w/index.php?curid=729447
Adhesive tape By BarberJP - Own work, Public Domain, commons.wikimedia.org/w/index.php?curid=5040682
Antibiotic discs By CDC/Dr. JJ Farmer (PHIL #3031), 1978. - Obtained from the CDC Public Health Image Library., Public Domain, commons.wikimedia.org/w/index.php?curid=1863159
Cheek cells
commons.wikimedia.org/wiki/File:Cheekcells_stained.jpg
Mulletsrokk, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
