Biology > STUDY GUIDE > Ecore Biology 1011K Final Study Guide | 100 Questions with 100% Correct Answers | Updated & Verified (All)

Ecore Biology 1011K Final Study Guide | 100 Questions with 100% Correct Answers | Updated & Verified

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A scientist observes that when she opens the back door of her house to let her cat out, the songs of a certain species of bird abruptly change. She wants to follow up on her observations with an inf... ormal experiment. Which of the following is the best hypothesis for explaining the birds' song changes? - ✔✔The bird species switches from song to warning call whenever it sees a potential predator. A scientist wishes to test a new antibiotic's ability to treat stubborn bacterial infections. He tests his hypothesis that the antibiotic works better than existing treatments by giving bacterial infections to mice and treating them with the antibiotic. He then determines how many of the mice recover from their infections. What is missing from his experimental design? - ✔✔He is missing a control group of mice that did not receive the new antibiotic. A scientist believes that she has found a new life form. Which of the following conditions is not considered essential in determining whether the putative new life form is alive? - ✔✔The creature's body is bilaterally symmetrical. What is the main purpose of conducting experiments? - ✔✔disproving a hypothesis Which of the following lists correctly presents levels of organization from simplest to most complex? - ✔✔molecules, cells, populations, ecosystems [Show More]

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