Imagine you made a single kirby bauer plate to determine if a given antibiotic were effective for treating a certain type of bacteria. Which of the following results would indicate that the tested antibiotic was not effective? The presence of a purple coloration in the bacteria, after adding the antibiotic disc The presence of a large zone of inhibition around the antibiotic disc The presence of a pink coloration in the bacteria, after adding the antibiotic disc. Bacterial growth right up to the antibiotic disc.

Q: What results on a microdilution antimicrobial susceptibility test would indicate an antibiotic would…

A: An antimicrobial susceptibility test is a scientific procedure used to evaluate how effective…

Q: You have a culture that has 5 X103 cfu/ml of bacteria in it. You perform a serial dilution by adding…

A: In microbiology and bacteriology, the technique of serial dilution is a fundamental method used to…

Q: transferred to the plate. After 24 hours there were 60 colonies on the plate. What is the dilution…

A: b. The dilution factor is 1000. The patient sample contains 600,000 cells/ml

Q: Samples from an ill patient were collected by a physician for testing. A bacterial infection is…

A: Infections are the due to the activity of microbes in the body. Microbes can colonize in human body.…

Q: Complete the table below with the observations: include amount of growth (-, +, ++, +, ++), colonial…

A: Organism / MediaNutrient Agar (NA)Eosin Methylene Blue (EMB)Mannitol Salt Agar (MSA)Escherichia…

Q: You perform a quadrant streak and isolate a single colony which contains two distinct species of…

A: Quadrant streaking is a technique for microbial inoculation in which a single colony is isolated on…

Q: Step #1 Culture and perform a Gram-stain on the Super Bug You culture the Super Bug by swabbing the…

A: Bacteria are simple unicellular prokaryotic microorganisms that lack membrane bound organelles and…

Q: The size of the inhibition zone depends on conditions such as: Multiple Choice The concentration of…

A: Inhibition zone is often described as a circular area surrounding the antibiotic spot where colonies…

Q: You then take a cotton swab and subculture a sample from this zone of inhibition (where no growth…

A: The Kirby-Bauer test, known as the disk-diffusion method, is the most widely used antibiotic…

Q: How would you grow a streptomycin-resistant strain E. coli bacteria was spread on both agar plates…

A: Bacterial resistance does have the capacity where bacteria will withstand the effects of antibiotics…

Q: You prepared 10-7, 10-8, and 10-9 dilutions of a bacterial suspension in sterile saline. Then you…

A: Introduction There are different culturing techniques such as agar plates, broth culture, stab…

Q: If a bacterial species is not susceptible to an antibacterial drug at the concentration present in a…

A: Antibiotic susceptibility test is the test used to determine the effect of antibiotic to an…

Q: Citing data from the results table, tell which antibiotic is most effective against this type of…

A: Antibiotic zone of inhibition Antibiotics are a class of compounds or chemical that inhibits the…

Q: Use the photo below to measure the diameter of each antibiotic (all 3) and record the name and…

A: The microorganisms or bacteria are grown in the culture plate in the microbiology laboratory for…

Q: How can you tell that these S. aureus isolates are different strains?

A: Staphylococcus aureus is a disease-causing (pathogenic) Gram-positive bacterium that exists in a…

Q: riefly describe any THREE CATEGORIES (three modes of action) of antibacterial drugs.  Make sure to…

A: According to their principle of mechanism antibacterial drugs have been divided into several…

Q: Based on these results, which of the following statements is true regarding the effectiveness of…

A: A disinfectant is a chemical substance or compound that is used to inactivate or destroy the…

Q: If you were using the quadrant streak plate method to plate a very dilute broth culture ( with many…

A: Quadrant streaking is a microbiological technique which is used for isolation of pure strain from…

Q: What is an E-test strip, and what is it used for in the microbiology laboratory? Draw a diagram of…

A: Microbiology is a branch of science which deals with the study of microscopic organisms such as…

Q: In the antibiotic disc diffusion study, the "Minimal Inhibitory Concentration" or MIC of the…

A: Antibiotic disc diffusion study is also known as the Kirby-Bauer method in which the…

Q: Which of the following are true of the above picture? (Select all that apply.) V The bacteria are…

A: Gram-negative bacteria have a thin peptidoglycan layer which fails to retain colour after treatment…

Q: To determine if the type of agar affects bacterial growth, a scientist cultures on fou different…

A: Agar is galactose based heterogeneous polysaccharide. Agar is made from red algae. The main…

Q: A patient sample will be analyzed. You are responsible to quantify the bacteria number. The dilution…

A: A sample of your blood, urine, skin, or any part of your body will be taken during a bacteria…

Q: A bacterial culture was grown for 12 hours. At 4-hour interval, the culture was sampled to determine…

A: To keep the number of colonies on the plate within a certain range, serial dilutions of culture are…

Q: You obtain a 1 mL sample of contaminated drinking water in order to calculate the number of  fecal…

A: The evaluation of fecal microscopic organisms in water could be a critical public well-being measure…

Q: e the process to make a 4-phase streak plate beginning with your first streak (i.e you have…

A: The sample/inoculum is usually pored by streak with the diluted through streaking it across the…

Modes of Nutrition

It is a biological process of providing or obtaining food that is necessary for growth and health. It includes many physiological processes - absorption, ingestion, assimilation, catabolism, excretion, etc. In biology, the science that deals with nutrition's physiological and chemical processes are called "nutritional science."