MICRO 3050 Exam 4 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++

MICRO 3050 Exam 4 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++ Leave the first rating Terms in this set (237) The intestinal microbiota (microflora) plays a role in: a. Training the immune system b. Production of essential vitamins for the host c. Colonization resistance d. All of the above d. all of the above Which one of the following statements does NOT describe transducing particles? a. They play a role in the transfer of bacterial genes b. They are defective bacteriophages c. They cause normal viral infections resulting in the release of newly synthesized virions upon lysis of the host d. They result from a mistake in the packaging of DNA into phage heads c. They cause normal viral infections resulting in the release of newly synthesized virions upon lysis of the host Suppose you are making a recombinant plasmid. Which one of the following protocols would work the best? a. Cut the plasmid and the DNA containing the gene of interest with the same restriction enzyme to generate sticky ends. Glue the gene of interest into the plasmid using DNA ligase b. Cut the plasmid and the DNA containing the gene of interest with different primers to generate blunt ends. Glue the gene of interest into the plasmid using a thermocycler c. Cut the plasmid and the DNA containing the gene of interest with the same restriction enzyme to generate blunt ends. Glue the gene of interest into the plasmid using Taq polymerase d. Cut the plasmid and the DNA containing the gene of interest with different ligases to generate sticky ends. Glue the gene of interest into the plasmid using DNA polymerase. a. Cut the plasmid and the DNA containing the gene of interest with the same restriction enzyme to generate sticky ends. Glue the gene of interest into the plasmid using DNA ligase Which one of the following statements is not true of animal viruses? (Choose the false statement) a. Some animal viruses have a provirus stage b. Many animal viruses are enveloped and are released via budding c. Persistent animal viruses insert into the host chromosome between the biotin and galactose operons d. Some animal viruses can cause cancer by mutating a host proto-oncogenes c. Persistent animal viruses insert into the host chromosome between the biotin and galactose operons Suppose you are looking for the location of a possible transposon in a nucleotide sequence (without the help of a computer program). Which of the following does NOT indicate that you may have found one? a. Inverted repeats b. A duplicated gene c. A mutation d. The sequence for the tra gene d. The sequence for the tra gene