joke123132
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A scientist crosses a strain of the fungus Neurospora producing pink spores with a strain of Neurospora producing white spores.

To cross these strains he used aseptic techniques. he moved a small agar cube containing one strain of the Fungus onto a new agar plate. Then he placed a second agar cube containing the other strain of fungus next to the first agar cube.

Describe and explain three ways in which the scientist would ensure he used aseptic techniques to move each cube of agar onto a new agar plate (3)


completely stuck on this one any ideas??
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RoseVet
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(Original post by joke123132)
A scientist crosses a strain of the fungus Neurospora producing pink spores with a strain of Neurospora producing white spores.

To cross these strains he used aseptic techniques. he moved a small agar cube containing one strain of the Fungus onto a new agar plate. Then he placed a second agar cube containing the other strain of fungus next to the first agar cube.

Describe and explain three ways in which the scientist would ensure he used aseptic techniques to move each cube of agar onto a new agar plate (3)


completely stuck on this one any ideas??
Hi, do you know what aseptic technique means? If not, it is when the agar is moved in a completely sterile environment (meaning no outside bacteria can get on the agar).
Therefore, to move the agar he may have needed tweezers, or some other apparatus. This apparatus would need to be sterilised either by dipping it in ethanol, or passing it through a Bunsen burner flame.

They may also move the agar in a space close to a Bunsen burner flame, as this would kill any bacteria nearby.

The final one could be that if the new agar is in a petri dish, he keeps the lid on the Petri dish before and after placing the cubes in.

If you’ve done the antibiotic resistance/disinfectant practical yet, I assumed it would be similar techniques to what you would use in this
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joke123132
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(Original post by RoseVet)
Hi, do you know what aseptic technique means? If not, it is when the agar is moved in a completely sterile environment (meaning no outside bacteria can get on the agar).
Therefore, to move the agar he may have needed tweezers, or some other apparatus. This apparatus would need to be sterilised either by dipping it in ethanol, or passing it through a Bunsen burner flame.

They may also move the agar in a space close to a Bunsen burner flame, as this would kill any bacteria nearby.

The final one could be that if the new agar is in a petri dish, he keeps the lid on the Petri dish before and after placing the cubes in.

If you’ve done the antibiotic resistance/disinfectant practical yet, I assumed it would be similar techniques to what you would use in this
really helpful and nicely explained thank you
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RoseVet
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(Original post by joke123132)
really helpful and nicely explained thank you
That’s ok, I’m glad it helped! )
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