The attachment of phosphoryl groups to specific amino acid residues is catalyzed by ___________ a. Diphteria toxin and cholera toxin b. Dinitrogenase reductase c. Protein phosphatases d. Protein kinases
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- Questions about cholera - In modern outbreaks, it has been noted that taking a drug like Prilosec or Nexium (Omeprazole or Esomeprazole), which is a proton pump inhibitor, worsens the intensity of the Cholera bacteria and the chances of contracting it. Why might taking a proton pump inhibitor increase chances of contracting cholera? - A hallmark of Vibrio cholerae infection is profuse, isosmotic diarrhea sometimes said to resemble “rice water”. The toxin secreted by Vibrio cholerae is a protein complex with six subunits. Cholera toxin binds to intestinal cells, and the A subunit is taken into the enterocytes by endocytosis. Once inside the enterocyte, the toxin turns on adenylyl cyclase, which then produces cAMP continuously. Because the CFTR channel of the enterocyte is a cAMP-gated channel, the effect of cholera toxin is to open the CFTR channels and keep them open. Why would continuously open enterocyte CFTR channels cause secretory diarrhea and dehydration in humans?CHOOSE THE BEST ANSWER: 2. ALL are true about the activity of Macrolides EXCEPT: It is effective against syphilis infections it resembles that of penicillin it is very effective against G(-) bacteria it is effective against erysipelas infections 3. These are ALL causes of bacterial resistance against macrolides EXCEPT: active efflux bacterial endospores release of esterases modification of binding site 4. These are ALL adverse effects of Erythromycin EXCEPT: CYP450 inhibition Hepatotoxicity Neutropenia Acute cholestatic hepatitis 5. These are drugs that have prolonged half-life when taken with erythromycin EXCEPT: Rifampicin Lipitor Lanoxin Lasixbotulinum toxin and tetanus toxin- how toxic are they, and what affect they have on the body? Thank you
- Thanking you in advance for your help List the cell wall components that contribute to virulence by protecting the bacteria from immune responses. List those that contribute to virulence by eliciting toxic responses in the human hostAnswer the following questions in complete sentences and paragraphs. Draw the diagram by hand: Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.RMSF- Tickborn disease caused by intracelular bacterium Rickettsia rickettsii How do Rickettsia avoid being phagocytized by macrophages and neutrophils , and explain how damage to the endothelial cell induce localized tissue hypoxia and the surge of "petechiae"
- Please answer fast 9. Traditional coagulase testing involves the detection of coagulase (slide test) or detection of both bound and free coagulase (tube test). Describe newer methods of Staphylococcus aureus identification such as latex coagglutination tests. What specific cell components are detected? 10. Name two media used to isolate Staphylococcus from mixed flora specimens and one for use with pure culturesCHOOSE THE BEST ANSWER: 7. ALL are true about Azithromycin EXCEPT: it does not inactivate CYP450 enzymes has better pharmacokinetic properties than Clarithromycin has a long half life could be taken with food 8. This is the microbial source of Chloramphenicol Streptomyces venezuelae Saccharopolyspora erythreae Saccharoplyspora venezeualae Streptomyces erythreae 9. Compound where chloramphenicol is derived from dichloroacetic acid nitrobenzene moiety and dichloroacetic acid nitrobenzene moiety lactone ring 10. Chloramphenicol has bactericidal activity against these bacteria EXCEPT: R. ricketsii B. fragilis H. influenzae N. meningitidesBox lists options: Thioredoxin is: oxidized, reduced activity causes the: inhibition, activation enzymes by: forming, eliminating there is: reduced, oxidized Benson cycle is: more, less
- Hello! -how can xenobiotics access the host through the diet, air, drinking water and drug administration? -what harms do xenobiotics cause? ( toxicokinetically and toxicodynamically). Thank you very much!Explain Why and How Questions???Give the reasons and examples!!!Add Structures too if present!! 1- GAG’s and glycoproteins errors causes many diseases?CHOOSE THE BEST ANSWER 16. Usual number of amino sugar/s present in aminoglycosides one four three two 17. Aminoglycoside that does not have an amino sugar Gentamicin Netilmicin Streptomycin Spectinomycin 18. It is the first antibiotic in treating tuberculosis Rifampin Isoniazid Streptomycin Ethambutol 19. It is the cause of Black Plague Mycobacterium leprae Clostridium tetani Yersinia pestis Clostridium difficile Other:_______ 20. Its adverse effect is Grey Baby Syndrome Tetracycline Chloramphenicol Cephalosporin Macrolide
