pathogenesis of bacterial infection pathogenicity toxigenicity
... humans (and animals) but can also frequently cause disease. For example, Escherichia coli is part of the gastrointestinal flora of normal humans, but it is also a comon cause of urinary tract infection, traveller´s diarrhea, and other diseases. ...
... humans (and animals) but can also frequently cause disease. For example, Escherichia coli is part of the gastrointestinal flora of normal humans, but it is also a comon cause of urinary tract infection, traveller´s diarrhea, and other diseases. ...
How are bacteria different from viruses?
... • Binary Fission: (video) Asexual division DNA replicates and cytoplasm divides • Conjugation (video) “Sexual” reproduction Sex Pilus extends between bacteria plasmid DNA is transferred from one bacterium to another • Spore Formation: occurs when growth conditions are unfavorable An endospore is a “ ...
... • Binary Fission: (video) Asexual division DNA replicates and cytoplasm divides • Conjugation (video) “Sexual” reproduction Sex Pilus extends between bacteria plasmid DNA is transferred from one bacterium to another • Spore Formation: occurs when growth conditions are unfavorable An endospore is a “ ...
Foods Made Using Bacteria
... Cheese is often made with Streptococcus and Lactobacillus bacteria. Fermentation lowers the pH, thus helping in the initial coagulation of the milk protein, as well as giving characteristic flavors. In such Swiss cheeses as Emmentaler and Gruyere, the typical flavor is the result of the use of Propi ...
... Cheese is often made with Streptococcus and Lactobacillus bacteria. Fermentation lowers the pH, thus helping in the initial coagulation of the milk protein, as well as giving characteristic flavors. In such Swiss cheeses as Emmentaler and Gruyere, the typical flavor is the result of the use of Propi ...
The Biotechnology Century and Its Workforce
... When Legionella was newly discovered, it was classified with the pseudomonads because a. b. c. d. e. ...
... When Legionella was newly discovered, it was classified with the pseudomonads because a. b. c. d. e. ...
Microbial Nutrition
... use in cytochromes and many enzymes – the organism secretes siderophores that complex with the very insoluble ferric ion, which is then transported into the cell – Siderophores = iron chelators ...
... use in cytochromes and many enzymes – the organism secretes siderophores that complex with the very insoluble ferric ion, which is then transported into the cell – Siderophores = iron chelators ...
Subject: Staining-Bacterial Cell Structure Lecture Number:3 Done by
... The capsule is considered a virulence factor in the bacteria. Virulence factors are the weapons bacteria use to attack our body or to evade the attack from our immune system. This means that it is important to see whether a bacteria forms a capsule or not, because if it does, more aggressive treatm ...
... The capsule is considered a virulence factor in the bacteria. Virulence factors are the weapons bacteria use to attack our body or to evade the attack from our immune system. This means that it is important to see whether a bacteria forms a capsule or not, because if it does, more aggressive treatm ...
Intergeneric transfer of Panton-Valentine Leukocidin
... between bacteria by transduction, propagation, or by horizontal gene transfer. These virulence factors make the bacteria more potent, and in some cases, resistant to medications. Panton-Valentine Leukocidin, or PVL, is a virulence factor that creates pores in cells and eventually breaks them down. P ...
... between bacteria by transduction, propagation, or by horizontal gene transfer. These virulence factors make the bacteria more potent, and in some cases, resistant to medications. Panton-Valentine Leukocidin, or PVL, is a virulence factor that creates pores in cells and eventually breaks them down. P ...
Pglo and Grizz Pharmaceuticals labs introduction
... We have 4 plates in this experiment a. - DNA LB b. -DNA LB/amp c. + DNA LB/amp d. + DNA LB/amp/ara What is the purpose of the –DNA LB plate? Which plates should be compared to determine if the bacteria have acquired the amp resistance gene? Which plates should be compared to demonstrate that arabino ...
... We have 4 plates in this experiment a. - DNA LB b. -DNA LB/amp c. + DNA LB/amp d. + DNA LB/amp/ara What is the purpose of the –DNA LB plate? Which plates should be compared to determine if the bacteria have acquired the amp resistance gene? Which plates should be compared to demonstrate that arabino ...
A Possible Mechanism of Repressing Cheating
... Winfried Just and Ying Xiao, Department of Mathematics, Ohio University This work was inspired by experiments on myxobacteria Myxococcus xanthus reported by Velicer et al. (2000). Under adverse environmental conditions individuals in an M. xanthus colony aggregate densely and form a raised ``fruitin ...
... Winfried Just and Ying Xiao, Department of Mathematics, Ohio University This work was inspired by experiments on myxobacteria Myxococcus xanthus reported by Velicer et al. (2000). Under adverse environmental conditions individuals in an M. xanthus colony aggregate densely and form a raised ``fruitin ...
Disease
... the disease known in the middle ages as the black death. This is because it frequently leads to gangrene and blackening of various parts of the body. Capillary fragility results in hemorrhages in the skin which also result in ...
... the disease known in the middle ages as the black death. This is because it frequently leads to gangrene and blackening of various parts of the body. Capillary fragility results in hemorrhages in the skin which also result in ...
Bacteria I
... glycogen, fats) for later use during periods of starvation • Could store iron oxide or phosphate depending on cell. ...
... glycogen, fats) for later use during periods of starvation • Could store iron oxide or phosphate depending on cell. ...
microbial growth requirements
... The known record for bacterial growth at high temperatures is about 110 degrees C near deepocean hydrothermal vents. Optimal growth temperature; temperature at which the species grows best. Most mesophilic organisms have an optimal growth temperature of approx. 37 degrees C. This means that most hum ...
... The known record for bacterial growth at high temperatures is about 110 degrees C near deepocean hydrothermal vents. Optimal growth temperature; temperature at which the species grows best. Most mesophilic organisms have an optimal growth temperature of approx. 37 degrees C. This means that most hum ...
How Antibiotics Work
... demonstrated that a soil bacterium was capable of decomposing the starchlike capsule of the pneumococcus bacterium, without which the pneumococcus is harmless and does not cause pneumonia. Dubos then found in the soil a microbe, Bacillus brevis, from which he obtained a product, tyrothricin, that wa ...
... demonstrated that a soil bacterium was capable of decomposing the starchlike capsule of the pneumococcus bacterium, without which the pneumococcus is harmless and does not cause pneumonia. Dubos then found in the soil a microbe, Bacillus brevis, from which he obtained a product, tyrothricin, that wa ...
prokaryotic cells
... membrane. Look at coloring sheets. B. Ribosomes - consist of RNA and protein, serve as sites for protein synthesis. C. Nuclear region - usually includes just one, large, circular chromosome, which contains the prokaryotic cell's DNA and some RNA and protein. It is also possible, but rarely, to have ...
... membrane. Look at coloring sheets. B. Ribosomes - consist of RNA and protein, serve as sites for protein synthesis. C. Nuclear region - usually includes just one, large, circular chromosome, which contains the prokaryotic cell's DNA and some RNA and protein. It is also possible, but rarely, to have ...
Bio fertilizers for sustainable soil health and crop
... long-term usage could lead to weakening the roots of plants and making them easy prey to unwanted diseases. Biofertilizers, on the other hand, help the soil to remain fertile and strong. ...
... long-term usage could lead to weakening the roots of plants and making them easy prey to unwanted diseases. Biofertilizers, on the other hand, help the soil to remain fertile and strong. ...
Practice Exam 3 - life.illinois.edu
... 3) Which one of the following statements about bacteria that cause foodborne illness is false? A.Campylobacter jejuni is a Gram negative helical shaped bacteria that can be transmitted in undercooked poultry and cause fever, headache, muscle pain, abdominal pain, nausea and diarrhea. B. Clostridium ...
... 3) Which one of the following statements about bacteria that cause foodborne illness is false? A.Campylobacter jejuni is a Gram negative helical shaped bacteria that can be transmitted in undercooked poultry and cause fever, headache, muscle pain, abdominal pain, nausea and diarrhea. B. Clostridium ...
Electron Sources
... 2. Generation time is the time it takes for a population of bacteria to double in number. For many common bacteria, the generation time is quite short, 20-60 minutes under optimum conditions. For most common pathogens in the body, the generation time is probably closer to 5-10 hours. Because b ...
... 2. Generation time is the time it takes for a population of bacteria to double in number. For many common bacteria, the generation time is quite short, 20-60 minutes under optimum conditions. For most common pathogens in the body, the generation time is probably closer to 5-10 hours. Because b ...
Understanding Our Environment
... Some autotrophic bacteria such as purple sulfur, purple non-sulfur and green sulfur bacteria photosynthesize without producing oxygen. They appear purplish or red to brown because the presence of a mixture of greenish, yellow, and red pigments. Their greenish pigment is called bacteriochlorophyll an ...
... Some autotrophic bacteria such as purple sulfur, purple non-sulfur and green sulfur bacteria photosynthesize without producing oxygen. They appear purplish or red to brown because the presence of a mixture of greenish, yellow, and red pigments. Their greenish pigment is called bacteriochlorophyll an ...
Spring 2015 Chapter 1
... or women, and so moving beyond that is a large step, and many compounds have failed.” He added, “Toxicity is often the Achilles’ heel of drugs.” Drug-resistant bacteria infect at least two million people a year in the United States and kill 23,000, according to the Centers for Disease Control and Pr ...
... or women, and so moving beyond that is a large step, and many compounds have failed.” He added, “Toxicity is often the Achilles’ heel of drugs.” Drug-resistant bacteria infect at least two million people a year in the United States and kill 23,000, according to the Centers for Disease Control and Pr ...
Bacteria - Dickinson ISD
... Thicker cell wall, but less pathogenic. Gram negative – stain red because they lack peptidoglycan in their cell wall. Thinner cell wall, but generally more pathogenic . ...
... Thicker cell wall, but less pathogenic. Gram negative – stain red because they lack peptidoglycan in their cell wall. Thinner cell wall, but generally more pathogenic . ...
Lab 7 - Microbial and Fungal Diversity Part 1 – Microbial Ecology
... comprised of gram-positive or gram-negative cells. 1. Place a small drop of water in the center of a clean microscope slide. 2. Select a bacterial colony by flaming the inoculating loop and cool the loop by touching it to a clear area of agar. Then, gently scrape the colony off the surface of the ag ...
... comprised of gram-positive or gram-negative cells. 1. Place a small drop of water in the center of a clean microscope slide. 2. Select a bacterial colony by flaming the inoculating loop and cool the loop by touching it to a clear area of agar. Then, gently scrape the colony off the surface of the ag ...
Chapter 4 - Functional Anatomy of Prokaryotic and Eukaryotic Cells
... Carbohydrate (NAG and NAM) backbone with protein side-chains strands are cross-linked by peptide bridges between the protein chains Some antibiotics (Penicillins) prevent the cross-links from forming; cell lyses o Thick layer of peptidoglycan – makes gram positives susceptible to antibiotics i ...
... Carbohydrate (NAG and NAM) backbone with protein side-chains strands are cross-linked by peptide bridges between the protein chains Some antibiotics (Penicillins) prevent the cross-links from forming; cell lyses o Thick layer of peptidoglycan – makes gram positives susceptible to antibiotics i ...
Handout
... in some cases, attachment signals the host cell to allow the bacterium to enter the cell host cell cytoskeleton is responsible for the cytoplasmic movements which bring the bacterium into the cell (image on next slide) Salmonella typhimurium and enteropathogenic E. coli produce invasins, surface pro ...
... in some cases, attachment signals the host cell to allow the bacterium to enter the cell host cell cytoskeleton is responsible for the cytoplasmic movements which bring the bacterium into the cell (image on next slide) Salmonella typhimurium and enteropathogenic E. coli produce invasins, surface pro ...