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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