You perform a Kirby-Bauer assay with two antibiotics. Antibiotic X has a zone of inhibition of 9 mm. Antibiotic Y has a zone of inhibition of 11 mm. Which antibiotic is better at killing this particular microorganism? Group of answer choices 1Antibiotic Y 2Antibiotic X and Y, which have identical antimicrobial activities 3Antibiotic X4 4It is impossible to tell from the information given

You perform a Kirby-Bauer assay with two antibiotics. Antibiotic X has a zone of inhibition of 9 mm. Antibiotic Y has a zone of inhibition of 11 mm. Which antibiotic is better at killing this particular microorganism? Group of answer choices 1Antibiotic Y 2Antibiotic X and Y, which have identical antimicrobial activities 3Antibiotic X4 4It is impossible to tell from the information given

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter9: Parenteral Medication Labels And Dosage Calculation

Section: Chapter Questions

Problem 1.1P

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Answer the following questions: 1. What was the first antibiotic and what was its importance? 2. What does resistance mean? 3. Who is affected by resistance? 4. What if the resistance problem is not solved? 5. Describe the structure of the bacterium (its parts) 6. Can bacteria change? explain 7. Why do Bacteria communicate, what is the purpose? 8. Explain how a bacterium achieves its resistance. 9. What is the use given to antibiotics in production animals? 10. Is this use in animals good practice? 11. Once resistance occurs, what has the scientific community had to do? 12. Do antibiotics only affect negative bacteria? explain. 13. What are the most feared diseases due to antibiotic resistance? 14. Should antibiotics be used against viruses? explain. 15. How can we avoid antibiotic resistance?
What results on a microdilution antimicrobial susceptibility test would indicate an antibiotic would be an effective treatment for an infection? O a. Growth next to the antibiotic O b. High optical density in the well with inoculum and antibiotic O c. Low optical density in the well with inoculum and antibiotic O d. No growth next to the antibiotic disk Clear my choice Next page
Choose the false statement below. O Effective antimicrobials may not be used commercially because of their mode of delivery or the time it takes them to leave the body. O Decontamination of an object is not necessary if disinfection is done properly. O In general, acid fast bacteria are less sensitive to antimicrobials than are Gram-negative bacteria or fungi. Question 8 Choose the false statement below: O Using three different classes of antimicrobials in combination greatly decreases the chance of developing resistance because the drug resistance strategy for one is the same for others. O Drug resistance to antimicrobials has proven to be extensive against chemotherapeutics as well as other chemical antimicrobials. O Collateral damage is a term that refers to the killing of normal body flora as well as pathogenic bacteria when taking antimicrobials or antibiotics.
Some bacteria produce the enzyme penicillinase, which breaks the beta-lactam ring in the penicillin molecule and converts it into penicilloic acid, which is harmless to bacteria. This is an example of which of the following mechanisms of antibiotic resistance? which option below is the answer? Destruction or inactivation of the antibiotic by the microbe Preventing penetration to the target site within the microbe Alteration of the drug’s target site(s) within the microbe None of the other four answers are correct Rapid ejection (pumping) of the drug out of the microbial cell
This antibiotic, novobiocin, was tested against two different types of bacteria. What can you say about antibiotic resistance from this result? OMicrobiology lnfo.com Staphylococcus saprophyticus Staphylococcus aureus Novobiocin is more resistant to Staphylococcus saprophyticus Novobiocin is more resistant to Staphylococcus aureus Staphylococcus saprophyticus is more resistant to Novobiocin Staphylococcus aureus is more resistant to Novobiocin DO NOVOBI- OCIN
Suppose you do this test on a hypothetical Staphylococcus species with the antibiotics pencilllin (p-10) and chloramphenicol (C30). You record identical zone diameters of 25 mm for the chloramphenicol and penicillin disks. Which antibiotic would be less effective against this organism? Penicillin falls to the left of the resistant zone Penicillin falls to the right of the suceptible zone zone Chlorampenicol falls to the left of the resistant zone Chlorampenicol falls to the right of the suceptible zone none of these
both left hand side is tetracycline and right hand side is ampicillin With reference to the table below, determine the antibiotic susceptibilities of different antibiotics against coli and S.aureus. Am=17mm Te=23mm E.coli Antimicrobial agent sensitive Intermediate resistant Interpretive categories and zone diameter breakpoints, nearest whole mm Ampicillin >17 14-16 <13 Tetracycline >15 12-14 <11
diameter AM=47MM TE= 27 MM both left hand side is ampicillin and right hand side is tetracycline With reference to the table below, determine the antibiotic susceptibilities of different antibiotics against coli and S.aureus. S.aureus Antimicrobial agent Interpretive categories and zone diameter breakpoints, nearest whole mm sensitive Intermediate resistant Tetracycline >19 15-18 <14
The world is facing a Corona Virus (COVID-19) Pandemic and as a potential scientist and a microbiology student, you have been required to prepare the easiest and most affordable hand sanitizer that can be utilized by students in various microbiology laboratories. Each student in your class has been given 96% ethanol and you are required to prepare 70% ethanol hand sanitizer in a 2L spray bottle. Describe clearly the method you will use in order to achieve the aim of the practical.
The Kirby-Bauer method uses a plastic strip with a concentration gradient of an antibiotic called an Etest strip. True False
Write the letter of your choice at the start of the sentence then support it with a short explanation. Plaque assay and Kirby Bauer assay are similar in terms of A. they both use a bacterial lawn B. zone of inhibition is measured C. antibiotics are used D. agar overlay is added on solidified agar
Think about minimal inhibitory concentration (MIC) assays. A set of tubes, all containing the same amount of bacterial cells, have decreasing amount of antibiotic X added to them. Tube 1 had 0mg/ml, Tube 2 has 100mg/ml, tube 3 has 50mg/ml, 4=25, 5=12.5, 6=6.25, and tube 7 has 3.125. If bacteria grew in tubes 1, 4, 5, 6, 7, what is the MIC of this antibiotic for this bacteria? Select one: a.None of the Above b.3.125 mg/ml c.25 mg/ml d.0 mg/ml e.50 mg/ml