While it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by coliforms under abnormal conditions (when they are present where they are not supposed to be or when their numbers exceed acceptable levels)
Q: Which of the following are characteristics of all coliforms? Select all that apply.…
A: Coliform bacteria are defined as either motile or non-motile.
Q: Which of the following is taken up by M cells of the large intestine, escapes out the bottom of the…
A: Shigella: A bacillary dysentery, a disease provoking severe bloody and mucous diarrhea…
Q: Streptococci/Enterococci Name of Organism: Enterococcus durans Type of Medium Blood Agar Color…
A: It is fairly easy to differentiate between Streptococci and Enterococci, both the type of bacteria…
Q: Did the investigator collect adequate information to determine the source of the outbreak? Provide a…
A: Introduction Disease outbreak investigation involves steps to identify the cause of a disease…
Q: Two patients are admitted to the hospital with bacterial gastrointestinal disease. Patient #1…
A: Gastroenteritis - It is the Inflammation of stomach and intestines ( Gastrointestinal tract)…
Q: Contaminating microorganisms may appear in food from all the following sources except Group of…
A: Microorganisms are both a gift and a hazard to nature and humans. They can be a nuisance as…
Q: Explain the difference between enterohemorrhagic, enterotoxigenic,enteroinvasive, enteropathogenic,…
A: Escherichia coli commonly called as E.coli is a gram negative bacteria. It is facultative anaerobic…
Q: What virulence factors of each species of Enterobacteriaceae?
A: Enterobacteriaceae is a family of Gram-negative, facultatively anaerobic, non-spore-forming rods.
Q: How many coliforms need to be present before drinking water is considered dangerous?
A: Coliforms are bacteria that can be found in the excrement of any animal, including humans. They can…
Q: This is a figure from a recent paper comparing different bacterial pathogen strains. What is being…
A: Pathogens are microbes that cause disease in host.
Q: An important food-borne pathogen as it can survive common food preservation methods: (choose one)…
A: Foodborne pathogens are essentially bacteria, parasites and viruses that are available in the food…
Q: Explain the difference between enterotoxigenic, enteroinvasive, enteropathogenic, and…
A: Enterotoxigenic E. Coli (ETEC) : is the name given to a group of E. Coli that produce special toxins…
Q: What is the range of salinities over which Halobacterium NRC-1 is able to survive? Why specifically…
A: The range in which Halobacterium NRC-1 would able to survive is between 234 ppt and 468 ppt…
Q: The most common preferred portal(s) of entry for human pathogens is (are): 1. Mucous membranes…
A: The infectious agents enters the body through the various of the portals including the skin ,…
Q: What is the significance of finding coliforms in drinking water?
A: Some living organisms cannot be visible by the naked eye and only can be seen under the microscope.…
Q: Please write the pathogen ,their morphology, ecology, mode of -:transmissions, diseases, and their…
A:
Q: How would a limited food supply affect the bacterial growth curve? The lag phase would be longer…
A: Bacterial growth curve is the number of living cells plotted against time. It has four phases, these…
Q: What are the causative agent mode of transmission and clinical symptoms of enteroaggregative E.coli…
A: Enteroaggregative E.coli - Causative agent - Escherichia coli EAEC is a pathotype of E. coli.
Q: What does it mean for salmonellosis to have an iceberg effect?
A: The term ‘Disorder’ defines an illness that deteriorates the normal physical and mental conditions.…
Q: Name four different pathogenic groups of Escherichia coli.
A: Escherichia coli Bacteria normally leaves in the intestine of animals including Humans. Most of them…
Q: Which of the following would be present in highest numbers in the indigenous microflora of the skin?…
A: Indigenous microflora Our skin contains various microorganisms such as bacteria fungi which are not…
Q: In stages of bacterial growth, this is the phase where the bacterium adjusts to the new environment…
A: There are many phases in the bacterial growth curve. These different phases together constitute…
Q: For long-term storage of microbes that will be may be revived and grown later, what temperatures are…
A: The underlying principle of long term preservation is to keep microorganisms in a dormant state,…
Q: What are the implications if your drinking water is contaminated with coliforms? And give three…
A: Public water systems are required to deliver safe and dependable consuming water to their clients 24…
Q: Pathogens have a variety of traits that interact with a host and enable the pathogen to enter a…
A: A pathogen is an organism that is capable of causing disease in an organism. It is also known as an…
Q: For which one of the following enteric illnesses is a chronic carrier state most likely to develop?…
A: Chronic carrier state refers to acts as the carrier or reservoir of the pathogen and the carrier has…
Q: Resistance to antimicrobial agents is more commonly seen in hospital-acquired infections with…
A: Bacteria acquire drug resistance and spread within their population. Drug resistance in bacteria…
Q: list bacterias that are part of the Enterobacteriaceae family
A: Enterobacteriaceae is a family of gram-native bacteria under Phylum Proteobacteria.…
Q: Give the standard scientific definition of “coliform”. Are coliforms indicator organisms (YES OR…
A: Bacteria are defined as single-celled micro-organism which has a simpler structure than other…
Q: If a broth tube is inoculated with 1,500 cells which immediately enter exponential growth, how long…
A: Here bacteria has entered exponential growth curve.... Formulation is - N=N°e^kt Where N is final…
Q: Where do the different types of coliforms come from?
A: Coliform are the rod shaped, gram negative bacteria, used as indicator organism for quality check of…
Q: High risk foods for spreading bacteria are those that contain high levels of protein. True or…
A: High Risk Foods: Any ready-to-eat meal that will easily support the growth of pathogenic germs and…
Q: What are the common pathogens isolated from stool samples? What is the difference between a coliform…
A: A pathogen is living thing that causes infection. Infections and microorganisms can be microbes,…
Q: Farmers often spray spores of which bacterial species that make a protein toxic only to some insect…
A: As we know that through genetic engineering it is possible to develop crops that are resistance to…
Q: Does the presence of coliforms in water sampe indicate that pathogenic organisms are present
A: Coliform bacteria are well-known markers of hygiene, water quality, and food safety. They're…
Q: A 23-year-old man develops explosive bloody diarrhea approximately 3 days after eating chicken that…
A: Diarrhea is characterized by the passage of watery or loose stool, at least three times a day. In…
Q: Foodborne pathogens often require the presence of a large number of microbes before an active…
A: Pathogens are the organisms which upon entering in to the host causes infectious diseases.…
Q: y do some household chemicals state that they will kill 99.9% of germs. Based on your knowledge of…
A: Antimicrobial agents are chemicals that are utilizing to sterilize or clean surfaces and find…
Q: Coliforms are commonly used as an indicator of drinking water quality. As we discussed, in March and…
A: The Coliforms are commonly used to indicate drinking water quality. In March and April of 1993 there…
Q: If you unfortunately ingested five (5) E. coli cells O157:H7 at 9:00 AM, May 27, how many cells…
A: Introduction Bacterial cells divide by binary fission. One cell divide to give 2 cells then from 2…
Q: Which of the following would NOT be considered as virulence factors? Group of answer choices Lipases…
A: Virulence factors are bacteria-associated molecules that are required for a bacterium to cause…
Q: clostridium botulinum is a bacterium usually present in soil that may cause botulism. Briefly…
A: Clostridium botulinum is an organism that produces the botulinum toxin. It causes the disease…
Q: When a housefly carries microbes on its surface and contaminates food or an open wound with those…
A: Microbes are the pathogen that cause disease in the human body.
Q: Which of the following microbial virulence factors helps to acquire rare ionic nutrients within the…
A: Siderophores is the microbial virulence factor that helps tissues of animal host to acquire ionic…
Q: Members of which of the following genera are the most common sexually transmitted bacteria in the…
A: Correct answer is Chlamydia Chlamydia is a common sexually transmitted disease (STI) caused by…
Q: Which strain of bacteria was determined to be disease causing agent in the Brussels sprout and other…
A: Bacteria are microscopic organisms which belong to prokaryote because these are unicellular…
Q: Explain why the total bacterial acceptable levels are higher than the coliform acceptable levels?
A: The number of bacterial-colonial units present in the sample is a total bacterial (TBC), which…
Q: What are some similarities and differences in characteristics between coliforms and fecal coliforms?…
A: Similarities:- - both coliforms and fecal coliforms are indicators of water contamination and used…
Q: The Enterotube II System is a rapid multi-test method used to differentiate members of the family…
A: The test that is carried out for the identification of the oxidase- negative, gram-negative,…
While it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by coliforms under abnormal conditions (when they are present where they are not supposed to be or when their numbers exceed acceptable levels)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Based on disease syndromes and characteristics, and also on their effect on certain cell cultures and serological groupings, five virulence groups of Escherichia coli are recognized. Briefly distinguish between these virulence groups. [Base your answer on virulence factors, pattern of bacterial attachment to host cells, effects of attachment to host cells, production of toxins, and invasiveness] What will the appearance of Escherichia coli be on MacConkey Agar red and Eosin Methylene Blue (EMB) agar, respectively.Resistance to antimicrobial agents is more commonly seen in hospital-acquired infections with enteric bacteria than in community-based infections with the same species. Explain why this is so.While it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by pathogenic strains.
- There have been many cases of human infection with Salmonella caused by contact (or ingestion) with raw or undercooked chicken. This is an example of which type of microbial source for foodborne illness? which option is the answer: 1. Contamination by human microbiota or pathogens during handling & preparation 2. A food animal – infection or colonization during its lifetime 3. Contamination by human or animal feces during growing, harvesting, washing, transport, or storage 4. None of the other four answers are correct 5. Contamination by naturally occurring environmental organisms from soil or other sourcesCampylobacter is an extracellular intestinal species that is a true pathogen. Which of the following specifically occur during the establishment and outgrowth stage (step 3) of the bacterial pathogenic process for this species? Tissue destruction to increase nutrient concentrations Production of exotoxins to decrease normal flora populationsWhy does Helicobacter pylori cause ulceractions in the lining of the Stomach? 1)The microbes secrete a toxin that prevents the host from detecting invasion of the microbe and thus allows it to thrive in the stomach and damage the host cells. 2)After invasion of the microbe in the cells lining the stomach, they are no longer able to produce mucous to protect the host cells from acid erosion 3)The microbe produces an enzyme that causes the cell to produce potent digestive enzymes that erode the stomach lining. 4)Once the microbe has entered the stomach, it releases digestive enzymes that degrade the mucous secreting cells.
- What are the common pathogens isolated from stool samples? What is the difference between a coliform bacterium and a noncoliform enteric bacterium? What diagnostic test differentiates Proteus and Providencia species from other Enterobacteriaceae? How would you differentiate between serotypes of E. coli? Are the gram-negative enteric bacilli fastidious organisms? Would they survive well outside of the body? If so, what significance would this have in their transmission? Why is serotyping particularly important in Salmonella infections and typhoid fever?What are the virulence factors of Salmonella typhi? Explain each factors in simple terms.Which of the following bacterial species is considered normal flora of the mouth? O 1) Streptococcus mutans 2) Escherichia coli 3) Klebsiella pneumoniae 4) Staphylococcus epidermidis
- Explain the role of pylori in the pathogenesis of peptic ulcers. Which populations are most susceptible to peptic ulcers? Is H. pylori normal flora? If so, what causes the species to become pathogenic? Construct at table to compare and contrast the 5 steps of microbial pathogenesis. How does extracellular growth differ from intracellular growth? Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. (2 points) Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.List three species of Betaproteobacteria that are known to behuman pathogens.Besides pathogens that cause typhoid fever, cholera, and dysentery, what other pathogens would be indicated by the presence of coliforms?
