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Science Bowl Question

📅 NSB 2013🎓 HS🔄 Round 4#️⃣ Q14❓ TOSS-UP📝 Multiple Choice

Which of the following is an example of a negative chemotactic response in bacteria?

W) Marine bacteria that use carbon dioxide as a nutrient are able to sense the concentration and move toward more highly-concentrated areas
X) Bacteria being viewed under a microscope move away from the light
Y) In a petri dish, E. coli will move away from concentrated areas of acetate
Z) Photosynthetic bacteria will move towards the light in a gradient
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