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- 14. Which of the following trees of life (showing Archaca (A), Bacteria (B), and Eukarya (E)) best represents our current understanding of the evolutionary relationships between them? B E E B E B vvv b. d. a.3 Ed What causes antibiotic resistance? - Kevin Wu E ANTIBIOTICS BACTERIA VS. Watch on YouTube How do antibiotic-rich environments like hospitals speed up the rate at which superbugs increase their percentage of the bacteria population? $ increase the rate of mutations in bacteria 4 R % 5 T 16 G 6 17 & Y H U TEDED Share 8 J 9 no insert K O2. Microbes also acquire genetic variation through transformation, transduction, and conjugation (gene transfer). These mechanisms often come into play when conditions are harsh. Explain genetic variation.
- 14. Which of the following trees of life (showing Archaca (A), Bacteria (B), and Eukarya (E)) best represents our current understanding of the evolutionary relationships between them? B E E B E A B E V V V V b. a. C. d.All mutations ________. a. result from radiation b. lead to evolution c. are caused by DNA damage d. change the DNA sequenceA suggested and testable explanation for an event is called a ________. hypothesis variable theory control
- Bacteria can evolve resistance to antibiotics quickly because of which processes? Select all that apply. Conjugation O Natural selection Genetic drift Mutation O Antibiotics1. Describe the diversity in organisms and the unifying concepts that integrate them. Discuss it thoroughly and do not just copy from somewhere, please.1. If an antibiotic was able to destroy the pili of bacteria, what effect would you expect it would have on that bacteria? They would not be able to give genetic material to other bacteria They would not be able to avoid predators They would not be able to make proteins They would not be able to go through binary fission
- 7) Horizontal gene transfer could be considered a type of interbreeding and thus the biological species concept works well for bacteria (true or false)Q 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.3. Suppose you do the Kirby-Bauer test on a hypothetical Staphylococcus species with penicillin and tetracycline. You record diameters of 20mm for tetracycline and 24mm for penicillin. Which antibiotic is most effective against this bacterium and why? Please explain and interpret these results. 4. There were a variety of different types of control methods used into today's lab (i.e. hot sauce, mouth wash, alcohol, etc.). Which one(s) do you think will work effectively and why? Think about what part of the cell would be affected by the control and explain.
