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- 5) The biological species concept cannot be applied to bacteria because a.they reproduce by binary fission b.they are single-celled c.they die d.they are all pathogens1. One strategy to overcome antibiotic resistance is to use the same antibiotics in animal husbandry as those that are prescribed for humans, since the potential for resistant bacteria to evolve would be limited to only a small number of drug classes. True FalseAn infectious material is isolated from a nerve cell. It contains protein with amino acid sequences identical to the host protein but no nucleic acids. It belongs to the group: a. prions. b. Archaea. c. toxin producers. d. viroids. e. spore formers.
- Genetic variation in bacterial populations cannotresult from(A) transduction.(B) conjugation.(C) mutation.(D) meiosis.1. What are the characterisitics of a good diluent in a quantitative bacteriology? List these characteristics and discuss. Please, do not just copy from somewhere.1) Which of the following apply(ies) to Bacillus cereus and Bacillus anthracis? Choose all that apply: a) B. anthracis forms spores while B. cereus does not b) B. cereus is more lethal when it causes an infection c) B. anthracis has extra-chromosomal DNA that makes it more pathogenic d) Despite their similar names, the two are actually not at all related e) The 16S rRNA gene sequences of these bacteria are more than 99% identical, meaning that they are actually members of the same species
- 4. Describe how plasmids conferring multidrug resistanceto bacteria may have evolved.1. Should all genetic modification (GMO) of food products be banned completely?1.Examine Whether the statement "Horizontal gene transfer is more prevalent in single-celled organisms than in multicellular organisms" is true or false. 2.Examine whether the given statement, "most of the DNA sequences in a bacterial genome code for proteins, whereas most of the DNA sequences in the human genome do not" is true or false.
- 5. How do antibiotic resistant bacteria demonstrate a current example of evolution by natural selection?5. Explain the concept of selective toxicity. How does it apply to the development of antibiotics? What does selective toxicity mean? What do we look for in a bacteria that we don’t have?_________3. It is microbial organisms that has a gene that makes plants resistant to herbicides. A. Bacillus thuringiensis B. E. coli C. Saccharomycetes cerevisiae
