Coagulase is aknown factor in the ability of S. aureus to cause infection. However, coagulases-negative staphylococci may be pathogenic as well. What are some of the factors that contribute to virulence of coagulase-negative bacteria?

Q: Which of the following is considered an extracellular enzyme & a virulence factor? sequesterase…

A: An extracellular enzyme is an enzyme that is produced by cells and released into the extracellular…

Q: Briefly describe why herpes simplex viruses (HSVS) cause chronic lytic infections that typically…

A: Viruses are minute particles that are made up of only their genetic material which may be DNA or RNA…

Q: Describe three unique qualities of Mycobacterium because of the presence of mycolic acid

A: Mycobacterium are the organisms which are associated with human and animal disease such as…

Q: Why must the antitoxin be administered in the earliest phases of botulism?

A: BOTULISMBotulism is a disease condition caused by the bacteria Clostridium botulinum. It is an…

Q: Considering that Staphylococcus epidermidis does not typically cause disease in a healthy person,…

A: Plasmids are small, self-replicating, extrachromosomal, circular double stranded DNA molecules…

Q: Why does Mycobacterium tuberculosis direct macrophages to engulf them?

A: Tuberculosis (TB) is an opportunistic infectious disease caused by the bacteria "Mycobacterium…

Q: C. bot and C. tetani are considered true pathogens while C. dificile is considered an opportunist.…

A: Clostridium botulinum  They are gram positive , spore forming rods . The organism are anaerobic.…

Q: Why is MRSA not confined to transmission only in hospitals?

A: MRSA is the methicillin-resistant Staphylococcus aureus that is a resistant strain of S. aureus. It…

Q: What role do virulence factors play in the four phases of infection? Describe the infection stage…

A: A disease is an abnormal state of an organism that disrupts biological processes. It might be acute,…

Q: This organism was found to have infected five other patients in the same hospital unit. All had…

A: Bacteria are single-celled microorganisms that can be found in a wide range of environments,…

Q: Candida Albicans may cause minor infections in healthy people,but causes dangerous infections in…

A: A disease is a state of unhealthiness of the physical body, mind and social interaction. A disease…

Q: Pseudomonas is a gram-negative rod-shaped bacterium, sometimes inhabits the intestinal tract, and…

A: Gram negative bacteria are those bacteria which does not retain the crystal violet stain used in the…

Q: What are blood born pathogens and how can it be prevented

A: Disease-causing microorganisms are pathogens.

Q: Most U.S cases of tularemia occur in the late spring and summer months, and a few cases occur in…

A: Tularemia is a zoonotic infection brought about by the gram-negative coccobacillus Francisella…

Q: How do bacteria evade the Immune System?  There are at least 3 common methods baceria accomplish…

A: Bacteria are a kind of biological cell.They are a kind of prokaryotic microorganisms.They are few…

Q: How does Streptococcus pneumoniae exploit serotypespecific immunity to evade detection?

A: Answer: Introduction: Streptococcus pneumoniae means is a Gram-positive, extracellular,…

Q: Why do mycoplasmas need to have stronger cytoplasmicmembranes than other bacteria?

A: Mycoplasma belongs to the genus of bacteria that lacks a property of cell wall around that surround…

Q: What are the most likely type and mechanism of the urticarial hypersensitivity reaction? What are…

A: Immunologic contact urticaria occurs secondary to interaction with an allergen due to IgE antibody…

Q: Why might the Yersinia pestis from a patient with pneumonic plague be more dangerous than the same…

A: Bacteria are the most important microorganisms to the food processor. Some bacteria are beneficial…

Q: A common characteristic of a site of infection, such as a pimple on the skin, is pus. What is…

A: The immune system plays an important role in the human body. It is involved in fighting the…

Q: why is chickenpox significant in the field of microbiology, supporting response with real-world

A: Chickenpox is caused by the Varicella-zoster virus (VZV) which belongs to the family of herpes…

Q: SARS-CoV-2 was shown to be transmissible even when the carrier has no symptoms. How did this…

A: SARS virus is a positive strand RNA virus and belongs to coronavirus family.

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: What is the principle of the coagulase test result? How does coagulase contribute to the virulence…

A: Coagulase test is used to detect whether the microbes present in media produce coagulase or not.

Q: Why is Salmonella typhi a gram negative bacilli? Explain.

A: The crystal violet stain utilised in the Gram staining method of microbial classification is not…

Q: You are working in a lab studying Streptococcus pyogenes as a cause of necrotizing fasciitiis.  You…

A: Streptococcus pyogenes as a cause of necrotizing fasciitiis.

Q: O Lipase which convey resistance to lipids and staphlokinase which clots the blood. O Lipase which…

A: Virulence factors are the proteins or any other factor which enhances the infectious capacity of…

Q: Why can Koch’s postulates not be used to identify the causes of diseases due to polymicrobial…

A: Koch's postulates are four criteria that denote the causative relationship between the microbe and…

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: What are the factors influencing the extent and the deverity of an infection, explain.

A: Introduction Emergence infectious disease are occurs due to newly identified and previously unknown…

Q: What are the portals of entry AND exit of salmonella Typhi? (specific body parts – name both…

A: Microorganisms are small organisms that are not visible to the naked but can be seen only with the…

Q: Why are healthy individuals in hospitals not considered to be as much at risk for infections by…

A: Superbugs are the microorganisms which can be Bactria, viruses or fungi, which develop resistance…

Q: Pseudomonas aeruginosa can cause disease in immunocompromised people. What are two characteristics -…

A: P.aeruginosa is a rod shaped,gramnegative mono flagellated bacterium.It is an opportunistic pathogen…

Q: What virulence factor, present in Streptococcuspneumoniae but absent from Salmonella enterica,…

A: A disease is a state of unhealthiness of the physical body, mind and social interaction. A disease…

Q: Identify two virulence factors in the picture and explain, in detail, how they mediate V. cholerae…

A: Vibrio cholerae, the causative agent of cholera, is a gram-negative bacterium that causes severe…

Q: Which virulence factor description among A-E is false? A) O Adhesins: fimbriae or pili are examples…

A: Virulence factors are the factors that increase the colonisation and help to adhere to the host…

Q: Given that so many infections are caused by gram-negative opportunists, what would you predict will…

A: AIDS, also known as (acquired immunodeficiency syndrome) is definitely one of the deadliest diseases…

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: that is a true pathogen. Which of the following specifically occur during the establishment and…

A: Compylobacter  A gram negative bacteria that causes diarrhoea.

Q: Why are Staphylococcus species so numerous onskin?

A: Bacteria belong to the prokaryotes and are one of the oldest living organisms on the planet. There…

Q: How do Salmonella typhi microorganisms live intracellularly? How are they able to replicate in…

A: Salmonella typhi is a rod shaped, flagellated, Gram Negative bacteria which is responsible for the…

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…

Reproductive system infection

The biological process through which parents produce new children is called reproduction. A reproductive system is a group of internal and external organs that collaborate to allow males and females to reproduce. Many experts believe that the reproductive system is one of the most important systems in the body due to its crucial function in the survival of the species. Among the body's basic systems, the reproductive tract is the one that differs the most between sexes, and it is also the only one that does not operate until puberty.