When a bacterium is pathogenic, how does it affect its host (the plant or animal that the bacterium lives in or on)?     it causes disease in the host     it benefits the host     it definitely improves the host’s environment     it has no effect on the host

Q: Which of these types of microbes is smallest?     yeast     spirochete     mycoplasma…

A: Yeast belongs to the group fungi. These are Eukaryotic Spirochaetes are Bacteria. These are…

Q: A roach crawls across a dirty floor and onto uncovered food.  An unsuspecting person eats the food…

A: Transmission of various microorganism by vectors is very common as vectors act as a vehicle for the…

Q: Feces, gastric secretions, and urine are not considered infectious unless  there is contact with a…

A: C. They are visibly contaminated with blood

Q: When a housefly, covered with microbes on its surface and contaminates an open wound by walking on…

A: One disease is transmitted from one to other through air, water etc. The transmission depends upon…

Q: Coley’s Toxin is really: a mix of harmless viruses. a mix of pathogenic bacteria. a…

A: Coley`s toxins is a mixture consisting of killed bacteria of species Sterptococcus pyogens   ,…

Q: Pick any bacterial pathogen, how could its relationship with its host be different if it was similar…

A: Pathogenic bacteria are those who cause harm to host organism. There are few bacteria who cause…

Q: Why should we care about them – are infections on the rise due to something that has changed, is the…

A: Herpes Simplex virus leads to genital and oral herpes. Patients can have sores filled with fluid in…

Q: Generally speaking, you would expect the density of a population of mice to be less than the density…

A: Population Density is defined as the number of populations in a particular area at a given time. It…

Q: A term to describe physical treatments that kill microbes on items or surfaces would be…

A: Microbes are microorganisms that make up a large fraction of the atmosphere. They are present…

Q: Bacillus thuringiensis Bt is a* A pathogen of cotton A recently developed alternative to…

A: Biological pesticides are natural pest control agents produced from bacteria, viruses, fungus, and…

Q: A man infected with a viral respiratory infection sneezes and releases tiny droplets containing…

A: INTRODUCTION Virus It is a microscopic infectious agent contain DNA or RNA as their genetic material…

Q: Yeast infection following antibiotic therapy is an example of _______ infection     . acute…

A: Following I will be discussing about opportunistic infections.  Opportunistic infections  are…

Q: Disease transmitted by droplet contact will most likely enter the human host through what portal of…

A: Microorganisms that cause disease are termed pathogens or infectious causative agents. When a…

Q: Which of the following is not a barrier to pathogen entry?a. oil gland secretions of the skinb.…

A: Pathogens are foreign substances that enter our bodies. They are responsible for causing diseases.…

Q: ost organisms that are considered resident microbes would fall into which of the lowing categories…

A: Symbiotic relationship is an ecological relationship between two organisms which living in closed…

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: Which of the following is not a condition of Koch’s postulates?a. isolate the causative agent of a…

A: Koch's postulates are four criteria designed to establish a causative relationship between a microbe…

Q: is bacterial infection same as bacteria toxin?

A: Microbes cause different diseases in different hosts. The microbes often evade the immune system and…

Q: Microbe that causes Disease Environment in which the microbe thrives How to break the environmental…

A: The microbiology studies about both the diseases causing microbes and beneficiary microbes, about…

Q: A crescent shaped bacterial cell is classified as a

A: Morphology or shape of a bacteria cell is the most distinguished property of a bacteria. It is the…

Q: Which of the following does NOT contribute to the virulence of a pathogen? The concentration…

A: The answer would be 5: all the above contribute to the virulence of a pathogen

Q: The attachment of a pathogen to host cells requires that  Group of answer choices pathogen adhesins…

A: The establishment of pathogen at the portal of entry is known as colonization. Pathogens colonize…

Q: Which best represents a chemical mediator that inhibits pathogen invasion? keratin antibacterial…

A: There are various chemical barriers against infection causing agents such as bacteria. Enzymes in…

Q: This térm đěščřibes treatment or a procedure performed for a particular diseas before a person…

A: A pathogen may be referred to as an infectious agent that can produce diseases. For example, viruses…

Q: Which of the following can be pathogens? (choose all that apply) Viruses Protists Parasitic worms…

A: A pathogen is an organism that origin illness in its host, with virulence referring to the intensity…

Q: Which of the following does not belong to the group?       Antimicrobial proteins…

A: The human body is home to many different types of cells, each with their own unique function. One…

Q: Which of the following stages of an infectious disease consist of no signs or symptoms of disease?…

A: The organism which causes disease to its host called pathogen. The pathogen are infectious. Example…

Q: Hepatitis B Virus is 42nm in diameter. Sacromyces cervisiae (a yeast) has a diameter of 4um in…

A: The living world contains different types of organisms such as bacteria, protozoans, plants, animals…

Q: Which of the following is an example of a healthy microbiota that helps prevent infection from…

A: 1. Cytophaga can cause erosion of the yolk skin, spinal deformities, central nervous system signs or…

Q: Which of the following statements about the microbiome is FALSE? O Defects in microbiome composition…

A: Microbiomes is defined as the microorganisms present in a proper environmental conditions. This…

Q: An 83 year old patient has been ill the past couple of days with an upper respiratory infection. Her…

A: Nursing counselling and advise involves certain intervention which helps process focusing on the…

Q: Which of the following does NOT describe a mechanism of antibiotic resistance among bacteria?…

A: Bacteria is a prokaryotic organisms which causes different types of diseases in humans and other…

Q: Describe how a microbe’s pathogenicity differences from its’ virulence

A: Microbes are microorganisms that cannot be seen by our naked eyes. They may or may not be virulent.…

Q: A(n) ____ is a substance that can kill or inhibit the growth of infectious microorganisms antibiotic…

A: An antimicrobial agent are those substace which kills microorganisms or inhibit the growth.

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.