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... Several flagella are shown. These are spiralised protein tubes that have a motor at their base. This motor anchors the flagella into the cell wall and its rotation causes the flagella to propel the bacterium along, like the propeller of a boat. Various flagellar arrangements are possible, from a sin ...
... Several flagella are shown. These are spiralised protein tubes that have a motor at their base. This motor anchors the flagella into the cell wall and its rotation causes the flagella to propel the bacterium along, like the propeller of a boat. Various flagellar arrangements are possible, from a sin ...
Fourth international symposium on microbial ecology
... the epidermal cells. Most of this population was easily removed by washing. Killing the bacteria, either before their interaction with the roots, or afterwards, eliminated the adsorbed bacteria from the root surface. This adsorption of Azospirillum to wheat roots can be defined as a weak active proc ...
... the epidermal cells. Most of this population was easily removed by washing. Killing the bacteria, either before their interaction with the roots, or afterwards, eliminated the adsorbed bacteria from the root surface. This adsorption of Azospirillum to wheat roots can be defined as a weak active proc ...
characterization of procaryotic cells inner structures in bacteria
... All bacterial cells require a constant supply of energy to survive. This energy, typically in the form of adenosine triphosphate (ATP), is derived from the controlled breakdown of various organic substrates (carbohydrates, lipids, proteins). This process of substrate breakdown and conversion into us ...
... All bacterial cells require a constant supply of energy to survive. This energy, typically in the form of adenosine triphosphate (ATP), is derived from the controlled breakdown of various organic substrates (carbohydrates, lipids, proteins). This process of substrate breakdown and conversion into us ...
Bacteria
... across a bridge formed between the cells. New material replaces old material in the cell. While this increases the genetic variability in the organisms, it is not true sexual reproduction. • Endospores - during adverse conditions, the DNA is encased in a protective envelope. This endospore can lie d ...
... across a bridge formed between the cells. New material replaces old material in the cell. While this increases the genetic variability in the organisms, it is not true sexual reproduction. • Endospores - during adverse conditions, the DNA is encased in a protective envelope. This endospore can lie d ...
Quiz Answers
... reproduction. Resistance can happen through a mutation in a gene that causes the enzyme structure to change so that the antibiotic can no longer bind and the bacteria can reproduce in the presence of the antibiotic. - Destruction/Inactivation: Resistance can happen through the production of enzymes ...
... reproduction. Resistance can happen through a mutation in a gene that causes the enzyme structure to change so that the antibiotic can no longer bind and the bacteria can reproduce in the presence of the antibiotic. - Destruction/Inactivation: Resistance can happen through the production of enzymes ...
Bacteria - Cronodon
... Above: The bacterium Vibrio, a single cell with numerous flagella with which it swims or crawls over moist surfaces. The flagella are helical propellers that rotate – they are driven by tiny rotating electric motors in the cell wall. Bacteria are an ancient lineage and are quite ‘alien’ by animal an ...
... Above: The bacterium Vibrio, a single cell with numerous flagella with which it swims or crawls over moist surfaces. The flagella are helical propellers that rotate – they are driven by tiny rotating electric motors in the cell wall. Bacteria are an ancient lineage and are quite ‘alien’ by animal an ...
Plate 27 - Bacterial Transformation
... “competent” through chemicals, heatshocking, and electro-shocking ...
... “competent” through chemicals, heatshocking, and electro-shocking ...
Bacteria Reproduction Quiz Answers
... 4. Describe binary fission. Include the processes that occur during binary fission. ...
... 4. Describe binary fission. Include the processes that occur during binary fission. ...
Bacteria Poster Questions
... 4. (a) Make a sketch of a bacterium with peritrichous flagella. (b) What do you think the word peritichous means? Hint- Where are the flagella located? (c) Give the scientific name of a bacterium with peritrichous flagella. 5. (a) Name a bacterium that is a spore former. (b) What disease/illness doe ...
... 4. (a) Make a sketch of a bacterium with peritrichous flagella. (b) What do you think the word peritichous means? Hint- Where are the flagella located? (c) Give the scientific name of a bacterium with peritrichous flagella. 5. (a) Name a bacterium that is a spore former. (b) What disease/illness doe ...
Title - Iowa State University
... o Parasitism: a parasite eats the tissues or fluids of its host, which harms the host Archaea 1. Name the three types of extremophiles, and describe their living conditions/preferences: Halophiles Either tolerate or prefer highly saline environments. ...
... o Parasitism: a parasite eats the tissues or fluids of its host, which harms the host Archaea 1. Name the three types of extremophiles, and describe their living conditions/preferences: Halophiles Either tolerate or prefer highly saline environments. ...
Chapter 18 Archaebacteria and Eubacteria
... Bacteria Pathogens “Local” infections - disease changes with area of body ...
... Bacteria Pathogens “Local” infections - disease changes with area of body ...
The Rise of Pathogens: Predation as a Factor Driving the Evolution
... human host and, therefore, only strains exhibiting these defenses would be able to colonize human hosts and hence be pathogenic. The main question then is whether virulence is a result of natural selection for phenotypes such as avoidance of host immune defenses and infectious transmission or whethe ...
... human host and, therefore, only strains exhibiting these defenses would be able to colonize human hosts and hence be pathogenic. The main question then is whether virulence is a result of natural selection for phenotypes such as avoidance of host immune defenses and infectious transmission or whethe ...
Molecular Microbiology
... the supernatant of this mutant was tested in the dropcollapsing assay. Results show that the supernatant of PCL1436 did not spread on a hydrophobic support, in contrast to supernatant derived from the wild-type strain (Fig. 1B). The culture supernatant from mutant derivative PCL1436 showed a surface ...
... the supernatant of this mutant was tested in the dropcollapsing assay. Results show that the supernatant of PCL1436 did not spread on a hydrophobic support, in contrast to supernatant derived from the wild-type strain (Fig. 1B). The culture supernatant from mutant derivative PCL1436 showed a surface ...
Introductory slides - first couple of lectures
... Place the cell into a cubic swimming pool 1 cm on each side, then expand the entire system so that the cell is now 2 m long (equivalent to a tall [6’6”] human): Swimming pool is just over 6 miles on a side!! ...
... Place the cell into a cubic swimming pool 1 cm on each side, then expand the entire system so that the cell is now 2 m long (equivalent to a tall [6’6”] human): Swimming pool is just over 6 miles on a side!! ...
biofilms as complex differentiated communities
... was answered, and the modern biofilm era began, when the first SCLM images of living biofilms (35) showed that sessile bacteria grow in matrix-enclosed microcolonies interspersed between open water channels as shown in Figure 1. The basic biofilm structure presented in Figure 1 is a computer-assiste ...
... was answered, and the modern biofilm era began, when the first SCLM images of living biofilms (35) showed that sessile bacteria grow in matrix-enclosed microcolonies interspersed between open water channels as shown in Figure 1. The basic biofilm structure presented in Figure 1 is a computer-assiste ...
Chapter 10 Active Lecture Questions
... b. Some gram-positive bacteria and some mycoplasmas produce catalase. c. Both groups are prokaryotic. d. Some gram-positive bacteria and some mycoplasmas have coccus-shaped cells. e. Both groups contain human pathogens. ...
... b. Some gram-positive bacteria and some mycoplasmas produce catalase. c. Both groups are prokaryotic. d. Some gram-positive bacteria and some mycoplasmas have coccus-shaped cells. e. Both groups contain human pathogens. ...
Prokaryotic organisms
... • small rings of DNA – plasmids – resistance to antibiotics, metabolism of unusual nutrients Replicate independently of the main chromosome ...
... • small rings of DNA – plasmids – resistance to antibiotics, metabolism of unusual nutrients Replicate independently of the main chromosome ...
Response: Discovery of colistin-resistant bacteria in a patient in
... of DNA called plasmids that carry the colistin-resistance gene. The bacteria from Denmark were also resistant to another type of drug, meaning that the options for treatment were further reduced. This type of resistance can be easily transferred between bacteria and as we know from other types of dr ...
... of DNA called plasmids that carry the colistin-resistance gene. The bacteria from Denmark were also resistant to another type of drug, meaning that the options for treatment were further reduced. This type of resistance can be easily transferred between bacteria and as we know from other types of dr ...
Domain Bacteria Kingdom Eubacteria
... vents, thriving on volcanic sulphur and surviving in water temperatures of up to 98°C. ...
... vents, thriving on volcanic sulphur and surviving in water temperatures of up to 98°C. ...
Dissolution of dinosaur bones in EDTA (Ethylenediaminetetraacetic Acid) often reveals... Tyler Bridges: Earth Sciences
... modeling aqueous anoxic, aqueous oxic, intensely radiated and frozen environments, each subdivided into three sediment types - mud, sand and a mud/sand mixture. Phalanges were removed and observed under a Field Electron Microscope roughly every three months for the duration of a year. Image analysis ...
... modeling aqueous anoxic, aqueous oxic, intensely radiated and frozen environments, each subdivided into three sediment types - mud, sand and a mud/sand mixture. Phalanges were removed and observed under a Field Electron Microscope roughly every three months for the duration of a year. Image analysis ...
Biofilm
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.