Purpose: To observe epithelial tissue by using a microscope to compare prepared slides. Introduction: Epithelial tissue covers the whole surface of the body. It is made up of cells closely packed and ranged in one or more layers. This tissue is specialized to form the covering or lining of all internal and external body surfaces. Epithelial tissue can be divided into two groups depending on the number of layers of which it is composes. Epithelial tissue which is only one cell thick is known as
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allele is expressed. The segregation of chromosomes at random during anaphase I explains Mendel’s observation that factors‚ or genes‚ for different traits are inherited independently of each other. Apply the rules of probability to infer genotypes from test crosses A test cross is used to determine the genotype of an individual with a dominant trait. Because the trait is dominant‚ an individual with the trait could be homozygous or heterozygous for the trait. (This cannot always be determined
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0.232 560 0.422 590 0.752 620 0.172 650 0.026 680 0.017 From graph 1‚ it can be seen that the highest peak is at wavelength 590nm‚ thus Amax of bromophenol blue is at wavelength 590nm. From table 1.1‚ it is shown that at wavelength 590nm‚ bromophenol blue has the Amax which is 0.752. Part 2: The effect of concentration on absorbance of bromophenol blue solution Table 1
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Chemotherapeutic Agents of Control: Introduction: Chemotherapeutic agents are chemical substances used to treat various forms of infectious diseases. The chemotherapeutic agent works by stopping the bacteria from reproducing. There are two different kinds of chemotherapeutic agents. The first kind is an antibiotic‚ which slow down the growth of microorganisms. The second kind of chemotherapeutic agent is synthetic drugs. Synthetic drugs are artificially made in a laboratory. Chemotherapy
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Potato Osmosis Biology SL - ATh INVESTIGATION “Potato Osmosis” INTRODUCTION Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Involved in this process are hypotonic‚ hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure‚ indicating
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excite one bonding or non-bonding electron from its stable ground-state orbital arrangement to an Excited State orbital. The electrons then reorganize their bonding to stabilize the excited state. In some instances bonds get longer or shorter‚ in other instances a covalent bond may be broken. These changes depend on the energy of the light absorbed by the molecule (which is proportional to its wave number and inversely proportional to its wavelength). From the relationship E = hc / λ‚ we can calculate
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Billy Crystal was originally offered the opportunity to voice Buzz Lightyear but declined‚ stating later that it was the biggest regret of his career. After Pixar heard that he’d said that‚ they offered him the role of Mike in Monsters‚ Inc. 5.) Kevin from Up is based on the Himalayan Monal pheasant‚ a bird found in western China. 6.) Pixar was worried that people would not know how to say Ratatouille‚ so all the logos on the promotional posters also had the pronunciation as “rat-a-too-ee” underneath
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Ahmad Shrab . Introduction This lab is purposed to familiarize basic equipment and techniques used in the study of microorganisms. In addition‚ learn some basic techniques used in identifying prokaryotes and make and view microscope slides of some common prokaryotes. In this lab ‚ I worked two experiments ‚ the first one is cultivation bacteria "colony "‚ and When microorganisms are cultivated
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turn milky white again then it would’ve signaled an incomplete reaction between the cations and HCl. The next objective was to separate the lead(II) ion from the mixture. The test tube with all three solids precipitated at the bottom was heated‚ which allowed the PbCl2 to dissolve. The supernatant fluid containing the Pb(II) ions was then separated from the solid mercury(I) ions and solid silver ions decanting‚ adding a drop of acetic acid to the supernatant fluid‚ and also adding two drops of K2CrO4
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Second titre 18.2 Third titre 15.2 Fourth titre 12.0 Qualitative data Observations: When dissolving the acid X in the water‚ most of it did not dissolve and become whitish foam sitting at the top of the solution. When transferring the acid from the mortar to the flask by washing it with water‚ the low solubility of the acid made it hard and some of it was still stuck in the mortar and was not transferred into the flask. When phenolphthalein was added to the unknown acid solution‚ the solution
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