Agar From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Not to be confused with auger or augur. For other uses‚ see Agar (disambiguation). Culinary usage Mizuyōkan - a popular Japanese red bean jelly made from agar. Scientific usage A blood agar plate used to culture bacteria and diagnose infection. Agar or agar-agar is a gelatinous substance derived by boiling[1] a polysaccharide in red algae‚ where it accumulates in the cell walls of agarophyte and serves as the primary structural
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sperm and the ova from the wife or surrogate mother is used for fertilization. The resulting embryos are then implanted in the woman’s or surrogate mother’s womb. The techniques today have in-vitro fertilization being used to achieve pregnancy in a petri dish. Since the birth of the first test tube baby in 1978 there have been demands for promulgation of laws to solve the disputes which were likely to crop up as derivatives of modern
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yellow color in acidic ones. Control Variables: * The same agar will be used for each experiment * All the experiments will be investigated in the same place * Volume and concentration of the Hydrogen Peroxide. Apparatus: * 1 Petri-dish of agar * Knife * Test tubes * Beakers * 100 cm3 of HCl * Stopwatch * Lab coat * Ruler Method: * Cut the agar into different sizes of blocks with a knife and measure the size with the help of a ruler to make an
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through the body. The Jarvik devices were implanted to sustain patients waiting for transplants. 2) Penicillin Penicillin was discovered accidentally by Sir Alexander Fleming in 1928 at St. Mary’s hospital in London when he forgot to clean a Petri dish before leaving on vacation. Fleming’s experimentation with the left-behind mold led him to discover its dissolving effects on the Staphylococcus aureus bacterium. Through further trials he discovered that a pure culture of the mold effectively killed
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Infertility‚ I.V.F. and other Assisted Reproductive Technologies A look into the main reasons for infertility‚ how procedures evolving from recent scientific breakthroughs can combat this problem and an insight into the ethics surrounding this issue of ARTs. Since the live birth of Louise Joy Brown (the first successful ’test-tube’ baby) in 1978; we have heard massive praise‚ accompanied by huge controversy about the use of In-Vitro Fertilization (IVF) and other methods of technology-assisted
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Project Title: Examination of bacterial content of sea water samples from selected sites in South East England Introduction Over the past few years coastal beaches across the UK has seen lavished with recognition for their cleanliness‚ by sections of the media and various organisarions. Majority of these beaches have been awarded the Blue flag award in recognition for meeting set criteria on various standard including cleanliness‚ water quality‚ environmental management and environmental education
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Practical Research & Report Assessment. Allelopathy and interference and the effect they have on plant growth. Allelopathy occurs in plants. Many plants produce chemicals that may be harmful or beneficial to other plants. In some cases a species can produce chemicals that can prevent the growth or germination of another species. An example of this is Australian native plants such as Casuarinas and Eucalypts which produce allelochemicals that prevent competition of other plants. This is a form of
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THE EFFECTS OF LIGHT AND GIBBERELLIN ON LACTUCA SATIVA L. GERMINATION Introduction The time that a seed germinates‚ and whether or not it actually does germinate‚ depends on many factors. These factors include; the chemical environment‚ which must be the right conditions; oxygen must be present‚ and inhibitory chemicals must not be present. Germination also depends on the physical environment. Temperatures must be suited to the seed‚ and light quality and quantity must also be suited to the needs
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To investigate the effect of variation in temperature on the permeability of cell membranes using fresh beetroot Aims In this investigation‚ you will subject fresh‚ washed beetroot discs to different temperatures to investigate the effect of temperature on the permeability of the plasma membrane. Overview The beetroot discs will be placed in distilled water at different temperatures. You will compare the intensity of the beetroot pigment that has leaked out from the cells subjectively and possibly
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at the same time. After some time‚ a white smoke was observed to evolve nearer the cotton ball soaked in HCl. This indicated that NH4OH‚ which is lighter‚ diffused faster than HCl. The next test was the agar-water gel test. It was composed of a petri dish of agar-water gel with three wells. A drop of potassium permanganate‚ potassium dichromate‚ and methylene blue were introduced to the three wells simultaneously. The diameters of the three substances were measured after a regular 3 minute interval
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