Bacterial Quorum Sensing (Ali Al Sani)

How do bacteria have an impact on its environment

• By multiplying and absorbing its host's nutrients

• By constantly releasing toxins

• By communicating with each other and releasing huge amounts of toxins together at once together

• By eating away at the body

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Why Would Vibrio Fischeri Only activate it's bioluminescence after a specific amount of cells being present

• They use the released hormones to check how many bacteria are present

• They check how many bacteria other than the are present

• they react the death of one bacteria causing a chain reaction

• The latest cell that has gone through mitosis announces how many cells there are

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NGSS.HS-LS2-1

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Most bacteria are harmful

• Yes

• No

• We don't know

Bacterial Quorum Sensing is:

• Intra-species

• Inter-species

• Inter-cellular

• All of the above (except for none of the above)

• None of the above

Which of these is false?

• Quorum sensing was discovered by bacteria in an octopus

• Most Bacteria have the same Signal hormone

• Quorum sensing happens in both same species cells and different species

• Bacteria use Quorum sensing to harm other species (releasing toxins)

How can other species benefit from Quorum Sensing

• Antibiotics

• Communicate with bacteria

• Program bacteria to do things

• Medicinal herbs