A level biology core practicals. AQA Investigation into the effect of a named variable on the rate of an enzyme- controlled reaction. AQA Preparation of stained squashes of cells from plant root tips; setup and use of an optical microscope to identify the stages of mitosis in these stained squashes and calculation of a mitotic index. AQA Production of a dilution series of a solute to produce a calibration curve with which to identify the water potential of plant tissue. AQA Investigation into the effect of a named variable on the permeability of cell- surface membranes. AQA Dissection of animal or plant gas exchange system or mass transport system or of organ within such a system. AQA Use of aseptic techniques to investigate the effect of antimicrobial substances on microbial growth. AQA Use of chromatography to investigate the pigments isolated from leaves of different plants, eg leaves from shade- tolerant and shade intolerant plants or leaves of different colours. AQA Investigation into the effect of a named factor on the rate of dehydrogenase activity in extracts of chloroplasts. AQA Investigation into the effect of a named variable on the rate of respiration of cultures of single- celled organisms. AQA Investigation into the effect of an environmental variable on the movement of an animal using either a choice chamber or a maze. AQA Production of a dilution series of a glucose solution and use of colorimetric techniques to produce a calibration curve with which to identify the concentration of glucose in an unknown . Ligustrum (privet), including calculation of actual size and magnification of drawing. WJEC Observation of T. S. Taenia. . WJEC Dissection of kidney. In microbiology, a colony-forming unit (CFU) is a unit used to estimate the number of viable bacteria or fungal cells in a sample. Viable is defined as the ability to multiply via binary fission under the controlled conditions. Control of Fusarium oxysporum Wilts Disease of Crossandra infundibuliformis var. Danica by Trichoderma viride and Trichoderma harzianum. All the isolated actinomycete strains were screened for their antibacterial activity on Yeast-extract-glucose-agar medium using streak-plating technique (Figure 3). A broad spectrum of antibacterial activity was observed in 53. Buy and sell surplus LABORATORY equipment. Contact: BAMKO-SURPLUS PROCESS EQUIPMENT LLC. WJEC Observation of prepared sections of kidney. WJEC Observation of electron micrographs of sections of kidney. The antibacterial activities of stem bark ethanolic extract of Erythrina caffra Thunb. Bacillus cereus is an aerobic spore-forming bacterium that is commonly found in soil, on vegetables, and in many raw and processed foods. Experimental Cell Research 25, S85-621 (1961) 5g5 THE SERIAL CULTIVATION OF HUMAN DIPLOID CELL STRAINS1 L. MOORHEAD Wistar Institute of Anatomy and Biology, Philadelphia, Pa., U.S.A. Received May 15, 1961. Writing Intensive Curriculum Program Select to search All of OSU Select to search for People Select to search for Media. Serial Dilution Plating Technique Ice
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