You are working in a pathology lab where you have to isolate the disease causing agents from human samples. You isolate a disease causing agent and treat it with an enzyme that degrades its protein and it remains unaffected. You decided to treat it with RNAse and found it lost its activity. What kind of pathogen you could suspect it could be?
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You are working in a pathology lab where you have to isolate the disease causing agents from human samples. You isolate a disease causing agent and treat it with an enzyme that degrades its protein and it remains unaffected. You decided to treat it with RNAse and found it lost its activity. What kind of pathogen you could suspect it could be? It is a one word answer only.
(Hint: It has no capsule, what is it?)
Step by step
Solved in 3 steps
- For a bacterial exotoxin with a typical A-B type toxin structure, removal of the A portion of the toxin would result in which of the following? The B portion remaining would still be able to bind to the target cell, but would not have toxic effects The remaining B portion would enter the cell and carry out its toxic activity, such as ADP-ribosylation The remaining B portion would cause inhibition of protein synthesis Nothing would happen because the A portion is responsible for binding to the target cell. The remaining B portion would still induce cell lysis Please answer asap and in short and content should not be palgarised pleaseYou are using bacterium E.coli to synthesize a protein from recombinant DNA. The protein remains in the bacterium, so you must lyse the cell in order obtain the protein. Describe the steps you will take to disrupt the microbe.In a petri dish with solidified agar with escherichia coli, enterobacter aerogenes and staphylococcus aureus, you streak a loopfull of lytic T4-phage in a single line onto the center of the the dish, how do you know if bacteriophage infected the bacteria. why didn't the bacteriophage infect all 3 bacteria?
- All except which of the following are compared when looking at the sequence analysis of ribosomal components in microorganism as a way to determine relatedness? a)ribosomal amino acid sequence b)rRNA sequence c) rDNA sequence d) antibotic resistanceA recent study found that 480 Streptomyces strains freshly isolated from the soil are resistant to at least six different antibiotics. In fact, some isolates are resistant to 20 different antibiotic drugs.Why do you think these bacteria (which are neither pathogenic nor exposed to human use of antibiotics) are resistant to so many drugs? What might be the implications for human bacterial pathogens?Acyclovir, Streptomycin, polymyxin, sulfonamide, or penicillin (choose one to fill in the blank Blank is an example of an antibiotic that will destroy the cell wall and Acyclovir, Streptomycin, polymyxin, sulfonamide, or penicillin (choose one to fill in the blank) Blank antibiotic will then have an easier time getting into the pathogen to block protein synthesis, this being an example of how synergistic drugs act.
- When a test tube of bacteria is treated with penicillin and left for two days, the bacteria were found to still be growing and the a changed form of penicillin is found inside of the bacterial cells. What mechanism of antibiotic resistance is likely to have occurred?In a series of infection experiments, a researcher discovers that the ID50 value for the infectious bacterium Parasiticum mucoides is 2,000, and that the ID50 for another infectious bacterium, Donoteatum thisbacterium, is 150. Given these data, a person exposed to 1,000 bacteria of each type would be more likely to be infected by which bacterium? There is no way to know given the information provided Both infections are equally likely Donoteatum thisbacterium Parasiticum mucoidesWhat is the best explanation for why a bacteriostatic treatment might be chosen over a bacteriocidal treatment? Bacteriostatic treatments will eliminate all bacteria while bacteriocidal treatments will only eliminate a portion of the bacteria. Bacteriostatic treatments typically have lower toxicity to the host when compared to bacteriocidal treatments. Bacteriostatic treatments will prevent all bacterial growth, while bacteriocidal treatments will permit some bacterial growth. Bacteriostatic treatments are typically more costly than bacteriocidal treatments.
- If a person contracted MRSA and no antibiotics are working on them, how would you go about finding a way to treat their infection? Describe, in detail, how you would devise a plan to save their life utilizing your knowledge of bacteria and viruses.Your biology lab instructor gives you a petri dish of agar covered with visible colonies. Your lab partner says the colonies are viruses, but you disagree. How do you know the colonies are bacteria?In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear areas were present. Fleming hypothesized that the mold must be producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of bacteria. He observed that the bacteria died which was later used to develop antibiotics used to treat a variety of diseases. (Biology Corner) 1. What was the initial observation Fleming made? 2. What was…