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What is the embosymbiotic theory and what evidence supports it?
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- What is the endosymbiotic theory? Discuss two lines of evidence that support the theory.Why is the Endosymbiotic theory so important?Griffith's Experiments using Streptococcus pneumonia rough and smooth strains concluded which of the following? a) DNA is the Molecule of Inheritance b) Some, yet unknown, factor of inheritance could be transferred from one bacteria to another. c) Protein if the Molecule of Inheritance d) Heat treating bacteria has NO effect on its virulence
- What's the endosymbiotic theory?what reasons do they provide to support their thesis?Which of the statements is TRUE about conjugation? a) Plasmid DNA is transferred from a donor (F+) cell b) It may only be performed by competent cells c) DNA is always integrated into recipient chromosome d) It may be specialized or generalized
- Penicillin was first used in the 1940s to treat gonorrhea infections produced by the bacterium Neisseria gonorrhoeae. In 1984, according to the CDC, fewer than 1% of gonorrhea infections were caused by penicillin-resistant N. gonorrhoeae. By 1990, more than 10% of cases were penicillin resistant and a few years later the level of resistance was 95%. Explain the various ways this resistance could be spread among the cells. Could this resistance pass to other infectious bacteria from N. gonorrhoeae?If graft qnd corruption are diseases, how do you propose to ameliorate their ravages? If they are only symptoms, what is the disease and how do you propose to treat it?17) What gives Aspergillus sydowii colonies their hairy appearance? a) Hyphae () b) Stipes c) Growing media ) d) Ascocarpoda Jack has designed one primer which is complementary to the DNA of E. coli. He then used that primer for a PCR reaction using DNA isolated from a mixture of bacteria. He got no PC reaction product and hence concluded that there is absolutely no E. coli in the bacteria mixture. His conclusion is .... () True ) False
- Which of the following methods is involved in determining the linkage group or genetic map in humans? 1)synteny testing 2) tetrad analysis 3) chiasmata analyses 4) bromodeoxyuridine 5)zygotene and pachytene DNA synthesisAll of the following are true statements concerning plasmids EXCEPT: O 1) They can carry genes that confer resistance against antibiotics 2) They can be found in bacteria, fungi, and protozoa 3) They carry genes that are required for growth and repair 4) They are small circular molecules of DNA. O 5) They can replicate autonomouslyWhat does a bacteriophage accomplish with lysogeny? O 1) it allows the bacteriophage to destroy the host cell's DNA. 2) it enables the bacteriophage to take over the cell. O 3) it speeds up the viral infection cycle. 4) it allows the bacteriophage to infect cells it would not normally infect. O 5) the genetic material of the bacteriophage can be passed on to future generations of infected cells.