What event is required but not sufficient to cause an infectiousdisease?

Q: Why do critical instruments need to be sterile, whereas semicritical instruments need only be free…

A: Laboratory instrument is defined as a general term used for all kinds and types of instruments,…

Q: What other factors may control the outcome of an infectiousdisease?

A: An infectious disease is the one that is caused by pathogenic microbes. These microbes can be…

Q: What is a vaccine?

A: Vaccines are a part of artificial active immunity. Antigens or a mixture of antigens which are used…

Q: Why is the level of contamination measured as number of colonies rather than size of colonies?

A: Microbiological contamination refers to the presence of unwanted or accidental introduction of…

Q: What conditions may have promoted bacterial growth?

A: There are some conditions that may have promoted bacterial growth. Here we will discuss the factors…

Q: What was one benefit of the vaccine produced by the command economy?

A: Command economy is also called as a planned economy, where the government controls all the economic…

Q: What is a cytocidal infection? What is a cytopathic effect?

A: SOME BASIC INFORMATION ABOUT INFECTIOUS AGENTS It is pathogens or the microorganisms which are…

Q: Which genetic events have allowed Acinetobacter to become so resistant?

A: Microbiology is the study of microorganisms that are invisible to the naked eye. The microorganisms…

Q: How are disease bacteria transmitted?

A: Step 1 Infective disease agents are a wide range of organisms – bacteria, viruses, protozoans,…

Q: Explain the History of the Microbe E.Coli

A: Escherichia coli also called as E.coli are defined as rod-shaped, motile, gram negative and…

Q: What tools are used to transfer bacteria

A: Ans - An inoculation loop is used to transfer bacteria for microbiological culture. Petri dish.…

Q: What is the difference between a disease vehicle and a diseasevector?

A: A disease vector is any agent that carries and and helps in transmitting an infectious pathogen into…

Q: Why are pathogenicity islands important?

A: The invasion of pathogenic microbes into the host body tissue is referred to as the infection.…

Q: What is the most chemically resistant non-spore-forming bacterial pathogen?

A: Although specific disinfectants and sterilization techniques are developed against the microbes, a…

Q: What is difference between lytic and lysogenic cycles?

A:

Q: Why do patients with XLA tend to contract infections associated withbacteria, more than viral…

A: Microorganisms or microbes are creatures that are only visible under the microscope. Various…

Q: Is the ability to produce antibiotics limited only to bacterial species?Explain.

A: Antibiotics are chemical compounds produced by bacteria and also by many other microbes.

Q: How many bacteriophage particles were isolated from a single plaque? Howmany different strains of…

A: Bacteriophages, which are mainly infected bacteria are going through the lytic or the lysogenic…

Q: What risk would a spore-forming bacterial speciesrun if it did not produce any spores until…

A: Ans: Spore or endospore: The tough, dormant, seed-like structure which is non-reproductive produced…

Q: Why is it difficult to develop a universal flu vaccine?

A: A universal flu vaccine refers to the type of vaccine that will be functional against all kinds of…

Q: Give three examples of diseases caused by an endospore-forming bacterium and the name of the…

A:

Q: What is the viral shunt in the microbial loop?

A: The microbial loop generally explains the trophic pathway where, in aquatic systems the DOC (…

Q: Which of the letter labeled microbes is exhibiting alpha-hemolysis?

A: The lysis or breakdown of red blood cells is called hemolysis. There are three types of hemolysis…

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: If the pneumonia is caused by bacteria , could you use Koch's postulates? In which case of bacterial…

A: Robert Koch is a German physician who developed Koch postulates. They define the relationship…

Q: Why would a bacteriostatic antibiotic that only INHIBITS growth of a pathogenic bacterium be useful…

A: Bacteriostatic antibiotics stops the growth of bacteria from reproducing and not necessarily kills…

Q: Which environment would a capnophilic bacterium like the best?

A: Microorganisms can be classified according to their requirements for growth. All the need and…

Q: Given that antibiotic-resistant strains of bacteria are a concern to the general health of a…

A: The antibiotics are a special substances that are released by some bacteria to kill or inhibit the…

Q: What causes the viral plaques that appear on a bacterial lawnto stop growing larger?

A: Viruses are microscopic agents that can replicate only inside the host cells. They can infect all…

Q: If you do not see single colonies on some of the plates, explain what might have happened to the…

A: A bacterial colony is a mass of bacterial cells originating from mother cells, they grow on solid…

Q: In which growth phase is the organism most sensitive to the antibiotic?

A: Microorganisms produced in closed culture (also known as batch mode) exhibit a repeatable…

Q: What is gamma phage?

A: Bacteriophages are the obligate intracellular parasites that can proliferate inside the bacterial…

Q: Why did viruses not fit well with Robert Koch's Postulates for the characterization of pathogenic…

A: Pathogens are disease causing organisism, which when enter the  body uses host body mechanism or…

Q: Whitch organism is this?

A: There are several thousands of different bacteria most in nature. Some of them are characterized by…

Q: What is a suspension of killed pathogenic bacteria known as?

A: Bacteria are microscopic single-celled prokaryotes that thrive in diverse environmental conditions.…

Q: Which Part Of The Bacteria Actually Gets Stained?

A: The primary goal of staining is to show cytological details that would otherwise go undetected;…

Q: what is Bacteriostasis

A: Bacteriostatic is a biological or chemical agent that stops bacteria from reproducing, while not…

Q: What are some humandiseases caused by bacteriaand what are their respectivemodes of transmission?

A: Various microorganisms are responsible for infectious diseases, E.g.bacteria,viruses, fungi,…

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 are the characteristics unique to spiral-shaped bacteria and how will these characteristics…

A: Spiral shaped bacteria are one of the category of prokaryotes along with rod shaped bacilli and…

Q: What is virulence factor in microbiology?

A: The molecules produced by bacteria, viruses, fungi, and protozoa that enable them to invade host,…

Q: = false of bacterial reproduction?

A: Bacterial reproduction: Bacteria is a form of prokaryote. All prokaryotes reproduce in the form of…

Q: What are the 3 types of bacterium that are oxygen dependent:

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

Q: Is a viral infection treatedwith the same kind of drugthat treats bacterialinfections?

A: The proliferation of harmful viruses inside the body of an organism causes viral infection. These…

Q: Why inoculate from just a single colony?

A: A microbiological culture, also known as a microbial culture, is a technique for growing organisms…

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.