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When Brian looked under the microscope, he found bacteria thriving inside the amoebae. He was surprised...

When Brian looked under the microscope, he found bacteria thriving inside the amoebae. He was surprised and called Sid over to look. “Wow, that’s unexpected. I wonder what would happen if you add antibiotics to some of the amoebae.” Brian thought about the other experiments he was supposed to be doing , but then decided he was interested enough to continue with this side project. He took Sid’s suggestion and added antibiotics to some of the amoebae. When he added antibiotics to the amoebae infected with bacteria, those amoebae died. When Sid heard this news he was excited and began talking about the endosymbiosis hypothesis.
3. What cell type is an antibiotic designed to kill?

4. Would you have predicted the amoebae to have died by adding an antibiotic? Why or why not?

5. What controls would you expect to see and what would these tell you?

6. What scientist is credited for first proposing the endosymbiosis hypothesis? Explain the hypothesis. Do Brian’s results provide support for it? Why or why not?

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