Q: Why are exotoxins more potent than endotoxins?
A: A lot of endotoxins is expected to causes a disease and consequently, their intensity (potency)…
Q: List the most clinically significant pathogens in the genus Staphylococcus,and identify the species…
A: Staphylococci are Gram-positive cocci ranging with a diameter between 0.5 – 1.0 μm and tend to grow…
Q: Why is Hydrogen peroxide solution so effective against anaerobes?
A: Hydrogen peroxide is a chemical compound that is acts as mild antiseptic. It is also an endogenous…
Q: What are the steps in a lysogenic infection?
A: The lysogenic cycle is the process through which a virus replicated its DNA by using a host cell.…
Q: Is it possible for nonprotein compounds to test positive for the xanthoproteic test? What are these…
A: Proteins are made up of number of amino acids. Amino acids are organic compounds with two functional…
Q: Against what cry I endotoxins obtained from bacillus thuringiensis are effective?
A: Bacillus thuringiensis, is a gram-positive bacteria, synthesize crystal (cry) and cytolytic (cyt)…
Q: Helicobacter pylori survives in the acidic environment of the human stomach, but this organism is…
A: Helicobacter pylori is a neutrophilic bacteria i.e. it loves the neutral pH and is able to survive…
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: 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 is the main purpose of haemolytic tests? What is the main substance responsible for this…
A: Pathogenic microrganism are the microbes that has capability to cause disease and infection inside…
Q: Which microbe requires serum components to be added to the growth medium?
A: Some microbes are nutritionally fastidious and hence needs some substances to be added to the growth…
Q: Why do botulism and tetanus show such opposing symptoms?
A: Botulism and tetanus are two neurological disorders in man and animals caused by the neurotoxins…
Q: What is the virulence factor of Mycobacterium tuberculosis
A: Virulence factors are specific molecules of pathogenic organisms that cause the invasion against the…
Q: why is peptidoglycan synthesis inportant in antibiotic activity? why do antibiotics not interfere…
A: Answer: PEPTIDOGLYCAN : It is a polymer which is made up of sugars and amino acids thats forms the…
Q: What is the relationship between the superantigens of S. aureus and the organism’s production of…
A: Staphylococcus aureus is a round-shaped, Gram-positive bacterium. It causes a range of illnesses. It…
Q: What Are Heterophile Antigens?
A: Antigens are substances that have the ability to initiate an immune response upon entering a host…
Q: explain
A: The beta hemolytic bacteria are the bacterias that causes complete hemolysis of the RBC in the blood…
Q: Why does intravenous administration of a bicarbonate solution raise theplasma pH?
A: The body maintains the pH within a normal range with the help of buffer systems.
Q: Briefly explain how urease helps Helicobacter pylori to evade the protective nature of the body.
A: Helicobacter pylori; is a bacterium which is responsible for many diseases and health in human…
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: 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: Why are gram-positive bacteria typically more resistant than gram-negative bacteria to…
A: Bacteria are found everywhere. They can survive almost every where including bottom of oceans, our…
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 are the characteristics of Pseudomonas aeruginosa that makes them resistant to iodophor?
A: Pseudomonas aeruginosa commonly occurs in soil and water. These bacterial infections if happen to a…
Q: According to the hemolysis results, how does Bacillus cereus differ from B. subtilis?
A: Given: To find how does Bacillus cereus differ from B. subtilis.
Q: Why are there so many deaths from influenza when it is generally a mild disease?
A: Influenza or more commonly known as flu is caused mostly by the Influenza A virus. The symptoms of…
Q: what is the media for mycobacterium tuberculosis?
A: Mycobacterium tuberculosis is a pathogenic bacteria that cause infection related to the lungs. they…
Q: Why are emboli dangerous?
A: Introduction Platelets are also referred to as thrombocytes; they are cytoplasmic fragments that…
Q: Injectable products must be endotoxin-free. true or false?
A: Endotoxin is a type of pyrogen and is component of the exterior cell wall of Gram negative bacteria…
Q: How would you interpret the hemolytic reaction on this SBA plat
A: The term hemolysis refers to the lysis of red blood cells. The enzyme which catalyzes the reaction…
Q: what treatment can kill the positive result of staphylococcus aureus in a catalase method ?
A: If an organism produces catalase enzyme, then it is able to breakdown hydrogen peroxide into water…
Q: How Liquefactive necrosis can generate disease ? please Explain at your own words
A: Necrosis refers to the unprogrammed, premature death of cells in living tissue (autolysis) due to…
Q: Explain about Haemophilus influenzae ?
A: Haemophilus influenzae causes different types of bacterial infections.This bacteria may cause mild…
Q: What is the optimum growth temperature for most human pathogens? Explain.
A: Bacterial growth is the division of one bacterium into two daughter cells in a process called binary…
Q: With some level of toxic shock syndrome caused by the superantigen produced by Staphylococcus…
A: Staphylococcus aureus - It is round shaped, gram positive bacteria, member of Firmicutes, generally…
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: What are the reasons for the failure of antimicrobial treatment?
A: Introduction: Antimicrobials are substances that kill or cause the inhibition of bacterial growth.…
Q: In the hospital setting, how effective is handwashing compared to hand sanitizer at controlling the…
A: Hands are the important vector in the transmission of the COVID-19 virus because the virus can…
Q: Why is Plasmodium species isolated usually in blood?
A: Plasmodium species are blood parasites belong to phylum protista that causes malaria. Vector for…
Q: What is bactericide exposure?
A: The term bactericide is related to bacteria. Bacteria are unicellular and prokaryotic organisms that…
Q: What microbe requires serum components to be added to the growth medium?
A: Introduction Microorganisms:- An organism that can be seen only through a microscope, They live in…
Q: What is virulence factor in microbiology?
A: The molecules produced by bacteria, viruses, fungi, and protozoa that enable them to invade host,…
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…
Q: How does Clostridium Perfringens contribute to the virulence of the pathogens, and give one specific…
A: Food contaminated by the bacterium Clostridium perfringens causes food poisoning. It is responsible…
How can activity of a hemolytic exotoxin be detected?
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- Why is it clinically important to distinguish S. pneumoniae from otherα-hemolytic streptococci?Which type of hemolysis characterizes Streptococcus pyogenes, the bacterium that causes strep throat?Mycobacterium tuberculosis recruits phagocytes to the site of infection. Based on this information, which of the three methods shown here does the bacterium likely use to avoid being destroyed?
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