Q: What event is required but not sufficient to cause an infectiousdisease?
A: An infectious disease is caused due to host invasion by biological agents. These biological agents…
Q: Do common fungi such as bread mold produce antimicrobial compounds?
A: The fungi are cosmopolitan and are almost found everywhere. There are variety of fungi present…
Q: Is the all Staphylococcus species are gram positive?
A: Microbiology is the branch of science that deals with the study of microorganisms that are too small…
Q: explain that Staphylococcus aureus is gram positive
A: Staining : It is a biochemical technique of coloring specimens. To stain these specimens dyes are…
Q: How can activity of a hemolytic exotoxin be detected?
A: Introduction Toxins can be of two type on the basis of their secretion viz. Endotoxins and…
Q: Why is the level of contamination measured as number of colonies rather than size of colonies?
A: Microbiological contamination refers to the presence of unwanted or accidental introduction of…
Q: What is unusual about the bacterium Gemmata?
A: Prokaryotes are the organisms that do not have the nucleus enclosed in an envelope. These are…
Q: Why is an organism such as Staphylococcus adapted to growth on the human skin whereas the…
A: An organism is able to grow well in an environment which it find suitable in terms of pH and…
Q: Why is staining of stool samples very important in identifying parasites?
A: In this question it is to describe that why is staining of stool samples very important in…
Q: Is it acceptable to give a formal name to a microbe that hasn't been isolated and cultivated? What…
A: There are two main microbiology methods used for isolating bacteria from a clinical sample in order…
Q: Plasmodium attacks the human liver as
A: Plasmodium is a variety of unicellular eukaryotes that are obligate parasites of vertebrates. The…
Q: What property of Staphylococcus epidermidis helps it to colonize plastic materials used in medical…
A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…
Q: What characteristics of Pseudomonas species allow them to spoil such a wide variety of foods?
A: Pseudomonas belongs to a group of gram-negative bacteria. They are a very common cause of infection…
Q: B.cereus
A: Bacillus is a genus of rod shaped, gram positive aerobic or facultatively anaerobic bacteria found…
Q: What Gram-negative organism commonly infects wounds caused by animal bites?
A: Animal bites are more often than not sources of deadly infections, They are caused due to the…
Q: Pseudomonas aeruginosa is a rod-shaped bacterium which causes Pner
A: Pseudomonas aeruginosa may be a common encapsulated, gram-negative, facultatively aerobic,…
Q: Why might members of Campylobacter not be isolated from a stoolspecimen in a diagnostic laboratory?
A: Efficient Detection of pathogenic organisms ensures the success of laboratory techniques. It is…
Q: Does the causative agent of tuberculosis, Mycobacterium tuberculosis, form spores thus making it…
A: Pathogens are the microbe that causes disease.
Q: How is the microbe that makes penicillin different from the one that makes streptomycin?
A: An antibiotic is a kind of antimicrobial substance dynamic against microbes. It is the main kind of…
Q: What characteristics differentiate Sarcina from Staphylococcus?
A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…
Q: How could species of Staphylococcus be differentiated fromStreptococcus?
A: Staphylococci and streptococci are among human bacterial pathogens of greatest importance. Currently…
Q: Why do gram-positive bacteria not produce endotoxins?
A: ExotoxinsThey are proteineous substances that are produced within the bacterium as a byproduct of…
Q: What might an infection by Gram-negative bacteriabe more difficult to treat than a Gram-positive…
A: Introduction Bacteria are single-celled organisms that are microscopic. Bacteria can be found…
Q: What function does the capsule have for Streptococcus mutans?
A: The capsule is the extracellular gel-like layer that surrounds the outside of cell wall of many…
Q: Why does one microbe cause disease, whereas another,closely related species is completely harmless?
A: There are a variety of pathogenic and non-pathogenic species of bacteria that are related to each…
Q: Why do healthy adults usually not contract Clostridium difficileinfections?
A: Microorganisms are small organism that cannot be seen by naked eyes. Microorganism such as bacteria…
Q: How does Roseobacter differ from Prochlorococcus?
A: An organisms that takeaway the photon express to obtain energy is called phototrophs. The ocean…
Q: How could one differentiate the genera Vibrio, Campylobacter,and Helicobacter?
A: Bacteria are the sole members of the kingdom Monera. They are the most abundant micro-organisms…
Q: What body systems are affected by eubacterium?
A: The eubacteria are also known as true bacteria. They are unicellular prokaryotic organisms that have…
Q: Haemophilus influenzae is ________and requires special ____________for growth.a. motile,…
A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…
Q: Which environment would a capnophilic bacterium like the best?
A: Microorganisms can be classified according to their requirements for growth. All the need and…
Q: Where is Plasmodium falciparum found?
A: Malaria is a disease in humans that is caused by protozoa parasites. The bite of female anopheles…
Q: Why are Bacillus infections commonly associated with exposureto soil and dust?
A: Bacillus are a genus of rod shaped bacteria. These bacteria form endospores and these endospores are…
Q: Where/ How did the researchers find the bacterium, which they named Ideonella sakaiensis 201-F6?…
A: Ideonella sakaiensis is a unique bacterial species that is able to break down plastic and it is…
Q: What is Plasmodium falciparum?
A: Protozoans are single celled eukaryotic organisms. They can be free living or parasitic, which feed…
Q: Motile spiroplasmas cannot contain a normal bacterialflagellum; why?
A: Flagella helps in movement of the bacteria, motility.
Q: Which of the following is NOT correct about Plasmodium?
A: answer is option-b
Q: Why is it necessary to test for endotoxin in water used forinjectable drug preparations?
A: The microbial toxins are poisonous substances generated by microbes such as fungi and bacteria to…
Q: Why are there fewer clinically effective antifungal andantiparasitic agents than antibacterial…
A: Antifungal agents or medications are the drugs or pharmaceuticals that either kill or inhibit the…
Q: Why are staphylococci well suited for the colonization of skin?
A: Staphylococcus is a gram positive bacteria. Bacteria are microscopic single-celled prokaryotes that…
Q: What is virulence factor in microbiology?
A: The molecules produced by bacteria, viruses, fungi, and protozoa that enable them to invade host,…
Q: What is the Fluorochrome staining technique for Mycobacterium
A: Mycobacterium - they are a type of germ. There are different kind of mycobacterium. Still others…
Q: why is Brocardia anammoxidan a Gram-negative bacteria? what does gram negative bacteria mean?
A: Answer. Bacteria are microscopic, relatively simple, prokaryotic organisms whose cell lacks a…
Why is Plasmodium species isolated usually in blood?
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- Why is Plasmodium species isolated usually in blood? What is the purpose of the thick and thin blood smear? What are the characteristics of a good quality malarial smear?What happens when a bacteria release toxin and how could we identify an endotoxin case?What is unusual about the organism Pyrolobus fumarii?
- Which environment would a capnophilic bacterium like the best?Explain how the body (including cells, organs, organ systems) is affected by the bacterium called Neisseria meningitidis? Are there any long-term effects caused by the bacterium, even after recovery?Mycobacterium tuberculosis is very difficult to stain because of the A) presence of ribosomes in the cytoplasm. B) location of the DNA within the cell. C) large amounts of a waxlike lipids present in its cell wall. D) lack of a cell wall.
- Depict the life cycle seen in Entamoeba histolytica infection.The patient was a 44 year-old male with a past medical history significant for hypertension, non-insulin-dependent diabetes, high cholesterol, and heavy smoking (2 packs/day). He presented to the emergency room with complaints of chest pain and was found to have suffered a myocardial infarction (heart attack). A cardiac catheterization on hospital day 3 showed three arterial occlusions, and he underwent a triple-bypass on hospital day 5. On day 7, he developed septic shock with acute respiratory and renal failure, requiring intubation. He had a fever at that time of 39.3° C and two blood cultures were obtained. A chest x-ray showed left lung pleural effusion and a chest tube was inserted to drain the effusion. On day 11, pus was leaking from the sternal wound. Cultures derived from the wound and from the chest tube grew the organism noted in figures 1 and 2. A Kirby-Bauer disk diffusion assay is shown in figure 3. Figure 1: Organism under 1000x #LEHET A ALBUFE ALTHO 65 greets Figure 2:…Why does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.