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Research Roundup - The Journal of Cell Biology
... pathway when used at concentrations that killed approximately 50% of the bacteria. These antibiotics kill bacteria by either damaging DNA, inhibiting protein synthesis, or blocking DNA synthesis. Thus, the mechanism of action of a particular antibiotic cannot be used to predict its ability to induce ...
... pathway when used at concentrations that killed approximately 50% of the bacteria. These antibiotics kill bacteria by either damaging DNA, inhibiting protein synthesis, or blocking DNA synthesis. Thus, the mechanism of action of a particular antibiotic cannot be used to predict its ability to induce ...
Bacterial Growth and Reproduction
... • Most bacteria have a doubling time of 1-3 hours, although some may be greater than 24 hours • Example: E. coli has a doubling time of 20 minutes • Bacterial division occurs according to a logarithmic progression (two cells, four cells, eight cells, etc.). ...
... • Most bacteria have a doubling time of 1-3 hours, although some may be greater than 24 hours • Example: E. coli has a doubling time of 20 minutes • Bacterial division occurs according to a logarithmic progression (two cells, four cells, eight cells, etc.). ...
Infection Control
... Divide into two new cells – mitosis Inactive (spore forming stage)-form spherical spores with tough outer covering for protection-cannot be harmed by disinfectants When conditions are favorable they grow and reproduce. ...
... Divide into two new cells – mitosis Inactive (spore forming stage)-form spherical spores with tough outer covering for protection-cannot be harmed by disinfectants When conditions are favorable they grow and reproduce. ...
Bacterial Jeopardy
... The population limit that an environment (or microbial culture) can support. ...
... The population limit that an environment (or microbial culture) can support. ...
Bacteria Jeopardy
... The population limit that an environment (or microbial culture) can support. ...
... The population limit that an environment (or microbial culture) can support. ...
File - Hawk Nation Biology
... organic matter (nitrogen-fixing bacteria) – Parasitic = feed on living host (pathogenic) ...
... organic matter (nitrogen-fixing bacteria) – Parasitic = feed on living host (pathogenic) ...
Bacteria and the body
... Bacteria and the body On and inside the human body, bacteria offer still other benefits. In the digestive system , they help us break down food, like plant fibers, that we're not so good a handling ourselves. "We get more nutrition out of our food because of bacteria," Maczulak said. Bacteria in the ...
... Bacteria and the body On and inside the human body, bacteria offer still other benefits. In the digestive system , they help us break down food, like plant fibers, that we're not so good a handling ourselves. "We get more nutrition out of our food because of bacteria," Maczulak said. Bacteria in the ...
You are also welcome to suggest your own topic
... - How do microbial communities respond to environmental changes? - Challenges and opportunities in environmental metagenomics - Challenges and opportunities in single cell genomics - Fighting infections with bacteriophages - Phage and the origin of molecular biology - Phage and the future of molecul ...
... - How do microbial communities respond to environmental changes? - Challenges and opportunities in environmental metagenomics - Challenges and opportunities in single cell genomics - Fighting infections with bacteriophages - Phage and the origin of molecular biology - Phage and the future of molecul ...
Bacteria and Algae - Hatboro
... • Makes food from light energy • Cyanobacteria (blue-green algae) – Most common type of photosynthetic algae – Single cells or long chains – Pump free oxygen back into the water ...
... • Makes food from light energy • Cyanobacteria (blue-green algae) – Most common type of photosynthetic algae – Single cells or long chains – Pump free oxygen back into the water ...
AN INSIGHT INTO BIOFILM ECOLOGY AND ITS APPLIED ASPECTS Review Article
... Biofilm reactors like Up flow Sludge Blanket, Biofilm Fluidized Bed, Expanded Granular Sludge Blanket, Biofilm Airlift Suspension and Internal Circulation reactors have been successfully used to treat municipal and industrial wastewater [26]. The property of biofilm to adsorb material on its surface ...
... Biofilm reactors like Up flow Sludge Blanket, Biofilm Fluidized Bed, Expanded Granular Sludge Blanket, Biofilm Airlift Suspension and Internal Circulation reactors have been successfully used to treat municipal and industrial wastewater [26]. The property of biofilm to adsorb material on its surface ...
(e) 4.1 Nitrobacteriaceae – 4.2 Pseudomonads
... These are Gram-negative bacteria. Non-sporing non-acid fast rods, which may be pleomorphic or coccoid (Nitrobacter), some are slender rods (Nitrospina), cocci (Nitrococcus) or spiral to comma-shaped (Nitrosipra) They may be motile. They are characterised by their ability to use nitrite as the only ...
... These are Gram-negative bacteria. Non-sporing non-acid fast rods, which may be pleomorphic or coccoid (Nitrobacter), some are slender rods (Nitrospina), cocci (Nitrococcus) or spiral to comma-shaped (Nitrosipra) They may be motile. They are characterised by their ability to use nitrite as the only ...
Chapter 28
... – Bacteria (also called Eubacteria) – Archaea (formerly called Archaebacteria) • Many archaeans are extremophiles ...
... – Bacteria (also called Eubacteria) – Archaea (formerly called Archaebacteria) • Many archaeans are extremophiles ...
Bacteria - Dickinson ISD
... 3) Facultative anaerobes = can live w/ or w/o O2, but most live w/o Ex: Escherichia coli (found in gut warm blooded organisms) ...
... 3) Facultative anaerobes = can live w/ or w/o O2, but most live w/o Ex: Escherichia coli (found in gut warm blooded organisms) ...
The bacterial world
... resistance in environment and against immune system of humans and animals… Dynamic genetic material rapid acquisition of new properties (antibiotics resistance, toxin production…) ...
... resistance in environment and against immune system of humans and animals… Dynamic genetic material rapid acquisition of new properties (antibiotics resistance, toxin production…) ...
Review articles Interactions between potentially pathogenic fungi
... multilayered microcolony surrounded by the EPS. Free DNA molecules found in the extracellular matrix contribute to the horizontal transfer of genes, which may lead to cell resistance to antibiotics in the biofilm. A system of channels allows for transportation of organic compounds and the removal of ...
... multilayered microcolony surrounded by the EPS. Free DNA molecules found in the extracellular matrix contribute to the horizontal transfer of genes, which may lead to cell resistance to antibiotics in the biofilm. A system of channels allows for transportation of organic compounds and the removal of ...
characterization of procaryotic cells inner structures in bacteria
... phase of exponential growth ...
... phase of exponential growth ...
STUDIES OF EFFLUX ACTIVITIES IN MICROORGANISMS AND
... Efflux pumps are systems devoted to the extrusion of noxious compounds from prokaryotic and eukaryotic cells. The expression of these pumps can raise cell resistance by several orders of magnitude, rendering some antibiotics and cytostatic compounds clinically useless. Efflux systems play a particul ...
... Efflux pumps are systems devoted to the extrusion of noxious compounds from prokaryotic and eukaryotic cells. The expression of these pumps can raise cell resistance by several orders of magnitude, rendering some antibiotics and cytostatic compounds clinically useless. Efflux systems play a particul ...
Presentation
... Products made from microorganisms How are these different from foods made by plants or animals? ...
... Products made from microorganisms How are these different from foods made by plants or animals? ...
Endosymbiosis Case Study Questions KEY
... students about what this means. Discuss how cells engulf large particles by phagocytosis and perform intracellular digestion with lysosomes. Another hypothesis will be that the amoeba engulfed the bacterium and the bacterium are alive with the amoebae. Students may come up with other ideas, such as ...
... students about what this means. Discuss how cells engulf large particles by phagocytosis and perform intracellular digestion with lysosomes. Another hypothesis will be that the amoeba engulfed the bacterium and the bacterium are alive with the amoebae. Students may come up with other ideas, such as ...
Endosymbiosis Case Study Questions KEY
... students about what this means. Discuss how cells engulf large particles by phagocytosis and perform intracellular digestion with lysosomes. Another hypothesis will be that the amoeba engulfed the bacterium and the bacterium are alive with the amoebae. Students may come up with other ideas, such as ...
... students about what this means. Discuss how cells engulf large particles by phagocytosis and perform intracellular digestion with lysosomes. Another hypothesis will be that the amoeba engulfed the bacterium and the bacterium are alive with the amoebae. Students may come up with other ideas, such as ...
Prokaryotes
... 4. Bacterial cell wall is composed of ______________. Gram positive bacteria have _______ peptidoglycan while Gram negative bacteria have ____________ peptidoglycan. 5. Gram-___________ bacteria have lipopolysaccharides on their cell wall, meaning they are ___________ resistant to antibiotics, which ...
... 4. Bacterial cell wall is composed of ______________. Gram positive bacteria have _______ peptidoglycan while Gram negative bacteria have ____________ peptidoglycan. 5. Gram-___________ bacteria have lipopolysaccharides on their cell wall, meaning they are ___________ resistant to antibiotics, which ...
Root Hairs. Plant Cell Monographs.
... tuftlike mass to one pole of B. japonicum cells. This bacterial lectin is important for adherence to other bradyrhizobia, resulting in the formation of “star”-like clusters (Loh et al. 1993). Soybean agglutinin (a plant lectin) binds to the opposite pole that BJ38 binds to, suggesting that soybean a ...
... tuftlike mass to one pole of B. japonicum cells. This bacterial lectin is important for adherence to other bradyrhizobia, resulting in the formation of “star”-like clusters (Loh et al. 1993). Soybean agglutinin (a plant lectin) binds to the opposite pole that BJ38 binds to, suggesting that soybean a ...
Biofilm
![](https://commons.wikimedia.org/wiki/Special:FilePath/Staphylococcus_aureus_biofilm_01.jpg?width=300)
A biofilm is any group of microorganisms in which cells stick to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm extracellular polymeric substance, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics. When a cell switches to the biofilm mode of growth, it undergoes a phenotypic shift in behavior in which large suites of genes are differentially regulated.