If an acid-fast bacterium is detected in a clinical sample, thenthe organism could bea) Cryptococcus neoformans .b) Mycobacterium tuberculosis .c) Neisseria gonorrhoeae .d) Streptococcus pneumoniae .e) Streptococcus pyogenes .

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: Which bacteria produce B-lactamase enzyme which is resistant to penicillin and why?

A: Antibiotics are the medicines which are used to cure infections which are caused by bacteria. These…

Q: Which of the following bacteria is an acid fast ? a) E.coli b)Pseudomonas aeruginosa c) Bacillus…

A: Introduction The property of an organism to resist the decolorization by acids during the staining…

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: What are some mechanisms by which pathogenic bacteria cause diseases? Why is this knowledge…

A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…

Q: Why did it take so long for scientists to figure out that infections are caused by bacteria? What…

A: Bacteria is prokaryotic microorganism.

Q: Why mightproteorhodopsin make a bacterium such as Pelagibacter morecompetitive in its habitat?

A: Proteorhodopsin(pRhodopsin) is a family of transmembrane proteins which is the most abundant retinal…

Q: What are challenges or difficulties we may encounter for identifying a bacillus cereus microbe ?

A: Bacillus cereus is a gram-positive, facultatively anaerobe, and the rod-shaped bacterium present in…

Q: What would you expect to observe if you were able to “transplant” CreS into a rod-shaped bacterium…

A: CreS refers to the protein Crescentin. It is a protein found in bacteria that is similar to the…

Q: n terms of the areas of the human body, how does this discrepancy in area differ in type and number…

A: In human body, bacteria are found in  area such as skin, nose, throat, mouth, vagina, and gut. the…

Q: What is the difference between the use of the shape bacillus and the name Bacillus? Staphylococcus…

A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…

Q: How can we differentiate a Bacillus cereus from B. subtilis if both are beta hemolysis?

A: Answer:  BETA HEMOLYSIS = It is the complete lysis of red blood cells in the agar, around the…

Q: In the name Mycobacterium tuberculosis, what are the genusname, specific epithet, and species name…

A: Tuberculosis is brought about by a sort of bacterium called Mycobacterium tuberculosis. It's spread…

Q: Explain how the type of hemolysis can be used to tell apart two species that would look the same…

A: Hemo means blood and Lysis means destruction so hemolysis is destruction of blood. Bacteria show…

Q: Is the ability to produce antibiotics limited only to bacterial species?Explain.

A: Antibiotics are chemical compounds produced by bacteria and also by many other microbes.

Q: What are Anammox reactions?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How does the E. coli strain 026:H11 damage its victims?

A: The enterohaemorrhagic E. coli (EHEC) serotype O26 is the second most common enterohaemorrhagic E.…

Q: you looked under a microscope and found colony of perfectly round bacteria, all in a straight line.…

A: Streptococci and staphylococcus are both in special shape and are bacterias but the perfect round or…

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   kills Haemophilus influenzae?

A: Haemophilus influenzae is gram-negative bacteria and cause infection in respiratory tract. This…

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: What are the requirements for Microbial Viability? Describe each of them?

A: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or…

Q: Which type of bacterial species can induce infections in humans?

A: Species of bacteria which cause disease are called pathogenic bacteria.  The body of the human is…

Q: name two antimicrobials and explain whether the organism was susceptible, intermediate, or…

A: We know, the Antibiotic prevent or stops the growth of microorganisms. Information on the minimum…

Q: What is the mechanism by which enterococci are able to grow in high salt conditions?

A: The Enterococci are facultative anaerobes, gram-positive coccus that appears to be in short chains…

Q: Which of the letter labeled microbes is exhibiting alpha-hemolysis?

A: The lysis or breakdown of red blood cells is called hemolysis. There are three types of hemolysis…

Q: What are the infectious agents of the microbial world?

A:

Q: If coliform bacteria are native to human colons, why the big concern over coliform contamination?

A: According to the question, we have to mention the solution of the question asked above i.e. If…

Q: If the pneumonia is caused by bacteria , could you use Koch's postulates? In which case of bacterial…

A: Robert Koch is a German physician who developed Koch postulates. They define the relationship…

Q: Using this flow chart, a species that is alpha-hemolytic and catalase-negative is…

A: In this question, we are given a dichotomous key for identification of bacteria on the basis of the…

Q: tists have cultured bacteria isolated from within frozen mammoths, which are thousands of years old.…

A: Microbes from thousands of years ago have been cultured from early fossils such as frozen mammoths.…

Q: What makes bacterial diseases such as Clostridium botulinum, Clostridium perfringens & Clostridium…

A: 1.Clostridium botulinum is an anaerobic, rod-shaped spore forming bacterium that produces a protein…

Q: Name the site where detoxification of xenobiotic compounds takes place?

A: Introduction :- The organelle endoplasmic reticulum, present in almost all eukaryotic cells is an…

Q: Describe the lines of proof Robert Koch used to definitivelyassociate the bacterium Mycobacterium…

A: Robert Koch was a physician and microbiologist. He was the founder of modern bacteriology and he…

Q: What is NBES?

A: NBEs stands for new biological entities. It can be defined as biological products that involve…

Q: What is the difference between an endotoxin and an exotoxin?

A: Nearly wherever we look, both within and outside of living things, there are microbes. Toxins…

Q: How can we experimentally prove that enterotoxin (A-B cholera toxin) is the sole cause of clinical…

A: Several microorganisms produce and secrete protein exotoxins that are either chromosomally encoded…

Q: In a series of infection experiments, a researcher discovers that the ID50 value for the infectious…

A: A pathogen is a microorganism that can be a bacteria, virus, protozoan, etc. which has the…

Q: Of what benefit is the organism Oxalobacter to human health?

A: Bacteria are microscopic single-celled prokaryotes that thrive in diverse environmental conditions.…

Q: With regard to gram-negative enterics, what do the letters O, H,and K stand for?

A: The major classes of antigens which are used in defining strains of Gram negative bacilli are 0-…

Q: How long does a bacterial infection last without antibiotics?

A: Most of the bacterial infections are localized and remain in the specific body part without…

Q: How might the physical differences between gram-positive and gram-negative bacteria contribute to…

A: Gram staining classifies bacteria into two groups based on their cell walls, namely Gram-positive…

Q: Why is the lower respiratory tract typically microbe-free?

A: Lung microbiota is the vast term for the community of pulmonary microbes that are found in the lower…

Q: What are two possible reasons for choosing a bacteriostatic treatment over a bactericidal one?

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is one difference between fermentation and anaerobic respiration?  Since neither requires…

A: Respiration  There are three types of processes of oxidation of food substrates in different…

Q: ium that causes Hansen’s disease (leprosy), Mycobacterium leprae, infects mostly the extremities of…

A: A chronic infectious disease caused by Mycobacterium leprae is refers as leprosy. The pathogen of…