Which of the following is a likely outcome of Rifampin treatment? Transcriptional elongation is blocked O Peptidyltransferase activity is inhibited at the ribosome The peptidoglycan cell wall is degraded by peptidoglycan hydrolases Double stranded DNA breaks Pore formation in the outer membrane

E. coli cells which are mutant for the y gene cannot accumulate ? in large enough amounts to use it as an energy source. galactose lactose beta-galactosidase CO2 O beta-galactoside permease

You are a pediatric specialty nurse caring for a patient infected with the mumps virus. The virus has infected the parotid salivary glands producing acute illness. Which of the following apply during the early, symptomatic stages of illness: O The patient has previously been vaccinated against the mumps virus O The patient has a population of mumps-specific memory cells O The patient has a high level of mumps-specific IgE O The patient has a small number of mumps-specific TH, Tc, and B cells O The patient has no mumps-specific TH, Tc, and B cells

How would a human cell normally change its expression of the gene for tyrosine aminotransferase? adipose cells will turn on this gene in the presence of glucocorticoids liver cells will turn on this gene in the presence of glucocorticoids liver cells will turn on this gene in the absence of glucocorticoids liver cells will turn off this gene in the presence of glucocorticoids  adipose cells will turn off this gene in the absence of glucocorticoids