Table of Contents
What is the microbial antagonism?
The inhibition of one bacterial organism by another. Through microbial antagonism, the normal bacterial flora of the body provides some defense against disease-causing organisms.
What happens in microbial antagonism quizlet?
Microbial antagonism refers to the mechanisms by which a pathogen damages the host. Microbial antagonism occurs when members of the normal microbiota prevent pathogens from colonizing and becoming established in the body.
What is microbial antagonism give an example?
Another example of microbial antagonism occurs in the large intestine. E. coli cells produce bacteriocins, proteins that inhibit the growth of other bacteria of the same or closely re- lated species, such as pathogenic Salmonella and Shigella.
What is a superinfection microbiology quizlet?
A superinfection is caused by a multidrug resistant organism. Superinfection is a disease caused by an organism that is often an opportunist or one that was present in low numbers. Superinfection is a sequel to removal of the normal flora by antibiotic treatment. Candida albicans.
Which best describes microbial antagonism quizlet?
Which statement best describes microbial antagonism? The normal microbiota prevents a pathogen from establishing an infection by producing toxic substances that prevent pathogenic bacteria growth.
What role does microbial antagonism play in nature?
What role does microbial antagonism play in nature? Microbial antagonism provides a competitive advantage for the antagonistic compound producer.
What are the four stages of clinical infection?
To cause disease, a pathogen must successfully achieve four steps or stages of pathogenesis: exposure (contact), adhesion (colonization), invasion, and infection.
What factors contribute to a microorganisms invasiveness?
Microbial invasion can be facilitated by the following:
- Virulence factors.
- Microbial adherence.
- Resistance to antimicrobials.
- Defects in host defense mechanisms.
What is the definition of a superinfection?
Definition of superinfection : reinfection or a second infection with a microbial agent (such as a bacterium, fungus, or virus)
What is a superinfection and how does one arise?
Definitions. According to the CDC, a superinfection is an “infection following a previous infection especially when caused by microorganisms that are resistant or have become resistant to the antibiotics used earlier,” while a coinfection is an infection concurrent with the initial infection.
What is mutualism in microbiology quizlet?
Mutualism is an obligatory relationship between two organisms in which both benefit.
What is invasiveness in microbiology?
Invasiveness is the ability to invade tissues. It encompasses mechanisms for colonization (adherence and initial multiplication), production of extracellular substances which facilitate invasion (invasins) and ability to bypass or overcome host defense mechanisms.
What do you mean by invasiveness of a pathogen?
Invasiveness is the ability of a pathogen to invade tissues.
What is antagonism in pharmacology?
In medicine, a substance that stops the action or effect of another substance. For example, a drug that blocks the stimulating effect of estrogen on a tumor cell is called an estrogen receptor antagonist.
What is the difference between a secondary infection and a superinfection?
A superinfection is a type of secondary infection that develops when antibiotics taken to treat a particular pathogen do not completely kill all of that original pathogen. D. A secondary infection is a type of superinfection that develops when the pathogen mutates in response to the antimicrobial agent.
What is microbial CONTAM?
Microbial Contamination IN HVAC SYSTEMS ABSTRACT Mr Jeremy Stamkos The article “Microbial Contamination in HVAC Systems” has been written to inform people as to some of the critical issues that mould in built environments present. The occurrence of Microbial Contamination in HVAC Systems is common and is caused by many contributing factors.
What is antagonism in microbiology?
Full opioid agonist – Methadone.
Which microorganism is least resistant to antimicrobial agents?
Strains of Staphylococcus aureus known as MRSA are resistant to methicillin but are susceptible to most other antibacterial agents. False (MRSA strains are resistant to most antimicrobial agents) Bacteria can develop resistance to a particular antimicrobial agent as a result of a chromosomal mutation or the acquisition of a new gene.
What influences the action of microbial agents?
Chemical agents can also be used to control or prevent the growth of microbes. These two can work together. Fig. 11.2 illustrates factors that influence the action of antimicrobial agents: 1. The number of microorganisms. The higher the cell count, the longer it will take to destroy the microbial population. 2. The nature of the microbial