Essays

Obligate intracellular pathogenesis

Obligate intracellular bacterial pathogens are also called as Obligate Parasitism , are living and replicate extremely inside the host cells with out extracellular state , Their genome usually small is around ( 0.5 -2 MB ) . They are widely …

    Fragments using restriction enzymes

    Lambda is a virus, it is able to express some of its genes by taking over the bacterial cell that it infects. In this investigation, I was observing the effects of three restriction enzymes on Lambda DNA, such as EcoRI, …

      Collaboration between children

      Outline ways in which psychologists have studied peer collaboration between children. Discuss the implications of this research for psychological theory and educational practice. Introduction The main way in which peer collaboration in children at school has been studied is through the use …

        Influencing children’s development

        Light et al (1987) used a computer based program of the towers of Hanoi. This involved rings being moved from one peg to another. The groups were same sex pairs or individuals. The results were unexpected and showed that in …

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          The eating disorders

          Over the years there has always been lots of debate over peoples figures and inevitably the eating disorders that follow from people trying to change their bodies into something more ‘preferable’, or at least different to what they are at …

            Listeria monocytogenes pathogenicity mutants

            Listeria monocytogenes is a facultative intracellular pathogen. This project aimed to produce strains that were defective for intracellular growth by mutagenising a culture with ultra violet light and nitrosoguanidine. Intracellular mutants were selected for using a method of ampicillin enrichment. …

              Mutagenised cells

              Auxotrophic mutants may be defective for intracellular growth however none seem to have been isolated, a point mentioned by Sun et al. A study by Marquis et al (1993) investigated whether there was a difference in intracellular growth in auxotrophic …

                PPL Therapeutics

                Perhaps the most famous part of the Sistine Chapel ceiling is called “The Creation of Man,” where God and Adam sail through the clouds with arms outstretched, the tips of their index fingers just barely touching. Standing in Rome beneath …

                  Current biotechnology research

                  “I’m fairly ambivalent. I’m not sure it’s going to be a horrible situation,” Smith says of the possibility of human cloning. “For one thing, I can’t imagine it will be that popular. I doubt it’s a thing most people are …

                    Life crises

                    One could probably say that development is one of the main aspects in a human being’s life. Therefore a child’s cognitive and psychological development is crucial from early days to late adult life. Among the first psychologists, Jean Piaget’s (1896-1980), Rathus …

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