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INFECTION AND INFECTIOUS PROCESS
... which fail to multiply on living tissue and so are not important in infectious disease. • Parasites: They are organisms that can establish themselves and multiply in hosts. They may be pathogens or commensal. Pathogens are those which are capable of producing disease in a host. On the contrary comme ...
... which fail to multiply on living tissue and so are not important in infectious disease. • Parasites: They are organisms that can establish themselves and multiply in hosts. They may be pathogens or commensal. Pathogens are those which are capable of producing disease in a host. On the contrary comme ...
Coliform Bacteria in Drinking Water Supplies
... fecal contamination are small, and the number of different possible pathogens is large. As a result, it is not practical to test for pathogens in every water sample collected. Instead, the presence of pathogens is determined with indirect evidence by testing for an “indicator” organism such as colif ...
... fecal contamination are small, and the number of different possible pathogens is large. As a result, it is not practical to test for pathogens in every water sample collected. Instead, the presence of pathogens is determined with indirect evidence by testing for an “indicator” organism such as colif ...
Human Digestive System
... and minerals and carry these nutrients to the hepatic portal vein which takes them to the liver. The liver acts as a warehouse, storing some nutrients & releasing others. Amino acids can not be stored in the body (toxic) and those that are not used by the body are broken down in the liver-deaminatio ...
... and minerals and carry these nutrients to the hepatic portal vein which takes them to the liver. The liver acts as a warehouse, storing some nutrients & releasing others. Amino acids can not be stored in the body (toxic) and those that are not used by the body are broken down in the liver-deaminatio ...
幻灯片 1
... positive bacteria need complex nutrient substances. Cell wall of Gram positive bacteria is not slick( 光滑) by electron microscope. It is obvious that gram’s staining ...
... positive bacteria need complex nutrient substances. Cell wall of Gram positive bacteria is not slick( 光滑) by electron microscope. It is obvious that gram’s staining ...
The Birth of the Nucleus
... convinced that eukaryote-like cells were around before bacteria and archaea or emerged right at the time when these prokaryotes split off to form separate kingdoms of their own. Fuerst points to an unusual group of bacteria that he’s studied for the past decade. These remarkable microbes have nuclei ...
... convinced that eukaryote-like cells were around before bacteria and archaea or emerged right at the time when these prokaryotes split off to form separate kingdoms of their own. Fuerst points to an unusual group of bacteria that he’s studied for the past decade. These remarkable microbes have nuclei ...
The Birth of the Nucleus
... convinced that eukaryote-like cells were around before bacteria and archaea or emerged right at the time when these prokaryotes split off to form separate kingdoms of their own. Fuerst points to an unusual group of bacteria that he’s studied for the past decade. These remarkable microbes have nuclei ...
... convinced that eukaryote-like cells were around before bacteria and archaea or emerged right at the time when these prokaryotes split off to form separate kingdoms of their own. Fuerst points to an unusual group of bacteria that he’s studied for the past decade. These remarkable microbes have nuclei ...
hauger(2) - Texas Department of State Health Services
... • ”Selection pressure of antibiotics has led to the emergence of antibiotic-resistant bacteria.” – Antibiotics can effect bacteria unrelated to the targeted infectious agent; these may be “normal” flora, leading to the emergence of resistant mutants inhabiting the same environment. ...
... • ”Selection pressure of antibiotics has led to the emergence of antibiotic-resistant bacteria.” – Antibiotics can effect bacteria unrelated to the targeted infectious agent; these may be “normal” flora, leading to the emergence of resistant mutants inhabiting the same environment. ...
hauger(2) - Texas Department of State Health Services
... • ”Selection pressure of antibiotics has led to the emergence of antibiotic-resistant bacteria.” – Antibiotics can effect bacteria unrelated to the targeted infectious agent; these may be “normal” flora, leading to the emergence of resistant mutants inhabiting the same environment. ...
... • ”Selection pressure of antibiotics has led to the emergence of antibiotic-resistant bacteria.” – Antibiotics can effect bacteria unrelated to the targeted infectious agent; these may be “normal” flora, leading to the emergence of resistant mutants inhabiting the same environment. ...
Presentation - IAC 2016, New Delhi
... ‘If the last blue whale choked to death on the last panda, it would be disastrous but not the end of the world. But if we accidentally poisoned the last two species of ammonia oxidizers, that would be another matter. It could be happening now and we wouldn’t even know’. no life can exist without the ...
... ‘If the last blue whale choked to death on the last panda, it would be disastrous but not the end of the world. But if we accidentally poisoned the last two species of ammonia oxidizers, that would be another matter. It could be happening now and we wouldn’t even know’. no life can exist without the ...
Sources of microorganisms in food.
... Pre dominant microorganisms in plants (fruits and vegetables). • Internal tissues are sterile except for few porous vegetables and leafy vegetables. • Some plants produce natural antimicrobial metabolites that limit the presence of microorganisms. • Fruits and vegetables harbour microbes on their s ...
... Pre dominant microorganisms in plants (fruits and vegetables). • Internal tissues are sterile except for few porous vegetables and leafy vegetables. • Some plants produce natural antimicrobial metabolites that limit the presence of microorganisms. • Fruits and vegetables harbour microbes on their s ...
Infectious and Parasitic Diseases
... and permits disseminated, and often recurrent, Neisseria infections. • Diseases such as diabetes mellitus and chemotherapeutic drugs that interfere with the production or function of neutrophils increase the likelihood of bacterial infections or invasive fungal infections. • Organisms that cause dis ...
... and permits disseminated, and often recurrent, Neisseria infections. • Diseases such as diabetes mellitus and chemotherapeutic drugs that interfere with the production or function of neutrophils increase the likelihood of bacterial infections or invasive fungal infections. • Organisms that cause dis ...
Read the full description.
... hamper DNA transcription and replication in living bacterial cells. ...
... hamper DNA transcription and replication in living bacterial cells. ...
Bacteriophage Therapy
... contain many subgroups. But one antibiotic may kill many different species and subgroups of bacteria simultaneously. So a physician would need to make a specific diagnosis before prescribing a phage treatment. 2. Absences of bacteriophage action efficacy in certain cases were reported. It may be due ...
... contain many subgroups. But one antibiotic may kill many different species and subgroups of bacteria simultaneously. So a physician would need to make a specific diagnosis before prescribing a phage treatment. 2. Absences of bacteriophage action efficacy in certain cases were reported. It may be due ...
E. coli is the most common cause of urinary tract infection and
... heterogeneous group of gram negative rods whose natural habitat is the intestinal tract of humans and animals. The family includes many genera (Escherichia, ...
... heterogeneous group of gram negative rods whose natural habitat is the intestinal tract of humans and animals. The family includes many genera (Escherichia, ...
E. coli again: A troubling new twist with serious consequences
... processing, preparation, or serving of food, or the contamination of vegetables by contaminated irrigation water. There are more than 700 serotypes of E. coli and only a few are responsible for illness in humans. In fact, the human gut is inhabited by non-toxic serotypes within 40 hours of birth. So ...
... processing, preparation, or serving of food, or the contamination of vegetables by contaminated irrigation water. There are more than 700 serotypes of E. coli and only a few are responsible for illness in humans. In fact, the human gut is inhabited by non-toxic serotypes within 40 hours of birth. So ...
Advances in Environmental Biology
... specialized type of pilus (always called a pilus), the F or sex pilus, mediates the transfer of DNA between mating bacteria, but the function of the smaller, more numerous common pili is quite different. Inasmuch as many bacteria are able to exchange genes for virulence by means of conjugation, the ...
... specialized type of pilus (always called a pilus), the F or sex pilus, mediates the transfer of DNA between mating bacteria, but the function of the smaller, more numerous common pili is quite different. Inasmuch as many bacteria are able to exchange genes for virulence by means of conjugation, the ...
19-3 Diseases Caused by Bacteria and Viruses
... Bacterial Disease in Humans Growth of pathogenic bacteria disrupts the body’s equilibrium by interfering with its normal activities and producing disease. ...
... Bacterial Disease in Humans Growth of pathogenic bacteria disrupts the body’s equilibrium by interfering with its normal activities and producing disease. ...
Digestive System Organs
... The stomach The stomach contains powerful acids to break down our food. The small intestine Much of the nutrients in our food are absorbed here, The large intestine Water is removed and the remainder is expelled as faeces. © Minerva Education 2016 | OS4B001 - Digestive system organs p1 | www.outstan ...
... The stomach The stomach contains powerful acids to break down our food. The small intestine Much of the nutrients in our food are absorbed here, The large intestine Water is removed and the remainder is expelled as faeces. © Minerva Education 2016 | OS4B001 - Digestive system organs p1 | www.outstan ...
Comments: Group and Self
... Context: Many students learn better when they can see what they are learning. You will construct a 3D model that will be designed to help other students learn about the human body systems ...
... Context: Many students learn better when they can see what they are learning. You will construct a 3D model that will be designed to help other students learn about the human body systems ...
Characteristic
... characteristic being employed for division at each branch or level. This system is called phylogenetic because it implies аn evolutionary arrangement of species. Depending оn the characteristic so chosen, the classification wou1d give different patterns. For example, the intestinal Gram negative bac ...
... characteristic being employed for division at each branch or level. This system is called phylogenetic because it implies аn evolutionary arrangement of species. Depending оn the characteristic so chosen, the classification wou1d give different patterns. For example, the intestinal Gram negative bac ...
Chapter 3: Observing Microorganisms Through a Microscope
... • TWO TYPES of SPECIMENS: – 1. ______________ • Wet Preps, Wet __________. • Living organisms suspended in fluid-organisms have little contrast with surrounding fluid. • Used to study: size, shape, arrangement of cells, (morphology) behavior , and _______________. ...
... • TWO TYPES of SPECIMENS: – 1. ______________ • Wet Preps, Wet __________. • Living organisms suspended in fluid-organisms have little contrast with surrounding fluid. • Used to study: size, shape, arrangement of cells, (morphology) behavior , and _______________. ...
Science 1.3 Questions 10
... This virus is spread easily and causes nausea, vomiting, stomach pains and diarrhoea for 1-2 days. A number of bacteria species can cause very similar illnesses, so doctors must find out which microorganism type is responsible to be able to treat it. Bacteria can be identified by culturing a sample ...
... This virus is spread easily and causes nausea, vomiting, stomach pains and diarrhoea for 1-2 days. A number of bacteria species can cause very similar illnesses, so doctors must find out which microorganism type is responsible to be able to treat it. Bacteria can be identified by culturing a sample ...
Word - The Open University
... from other commensals, but if the balance is disrupted then some commensals or even foreign microbes may get a chance to multiply and become more active. Many of the anaerobic bacteria naturally found in our gut may also become the cause of disease. The most common culprits are those in the phylum B ...
... from other commensals, but if the balance is disrupted then some commensals or even foreign microbes may get a chance to multiply and become more active. Many of the anaerobic bacteria naturally found in our gut may also become the cause of disease. The most common culprits are those in the phylum B ...
Unity and diversity in the metabolism of micro-organisms
... exhibit with respect to their nutrient requirements. For their studies on micro-organisms the early microbiologists depended more or less on the fortuitous appearance of special types. But gradually they became aware of correlations between the initial composition of the medium and the microbes ther ...
... exhibit with respect to their nutrient requirements. For their studies on micro-organisms the early microbiologists depended more or less on the fortuitous appearance of special types. But gradually they became aware of correlations between the initial composition of the medium and the microbes ther ...
Medical Microbiology II - E
... Aspergillosis is recognized in tissue by the presence of a. Metachromatic granules b. Psuedohyphae c. Septate hyphae d. Budding cells Fungi often colonize lesions due to other causes. Which of the following is least likely to be present as colonizer a. Candida b. Sporothrix c. Mucor d. Aspergillus A ...
... Aspergillosis is recognized in tissue by the presence of a. Metachromatic granules b. Psuedohyphae c. Septate hyphae d. Budding cells Fungi often colonize lesions due to other causes. Which of the following is least likely to be present as colonizer a. Candida b. Sporothrix c. Mucor d. Aspergillus A ...
Human microbiota
![](https://commons.wikimedia.org/wiki/Special:FilePath/Skin_Microbiome20169-300.jpg?width=300)
The human microbiota is the aggregate of microorganisms, a microbiome that resides on the surface and in deep layers of skin (including in mammary glands), in the saliva and oral mucosa, in the conjunctiva, and in the gastrointestinal tracts. They include bacteria, fungi, and archaea. Micro-animals which live on the human body are excluded. The human microbiome refer to their genomes.One study indicated they outnumber human cells 10 to 1. Some of these organisms perform tasks that are useful for the human host. However, the majority have been too poorly researched for us to understand the role they play, however communities of microflora have been shown to change their behavior in diseased individuals. Those that are expected to be present, and that under normal circumstances do not cause disease, but instead participate in maintaining health, are deemed members of the normal flora. Though widely known as microflora, this is a misnomer in technical terms, since the word root flora pertains to plants, and biota refers to the total collection of organisms in a particular ecosystem. Recently, the more appropriate term microbiota is applied, though its use has not eclipsed the entrenched use and recognition of flora with regard to bacteria and other microorganisms. Both terms are being used in different literature.Studies in 2009 questioned whether the decline in biota (including microfauna) as a result of human intervention might impede human health.Most of the microbes associated with humans appear to be not harmful at all, but rather assist in maintaining processes necessary for a healthy body. A surprising finding was that at specific sites on the body, a different set of microbes may perform the same function for different people. For example, on the tongues of two people, two entirely different sets of organisms will break down sugars in the same way. This suggests that medical science may be forced to abandon the ""one only"" microbe model of infectious disease, and rather pay attention to functions of groups of microbes that have somehow gone awry.