Botany Exercise 1 – Microscopy A. The Compound Microscope microscope – optical instrument consisting of a system of specially ground lenses that gives sharp‚ distinct‚ and highly magnified images of minute objects. compound microscope will be used. o two lenses: eyepiece + objective lenses o inverted image base coarse adjustment knob fine adjustment knob revolving nosepiece objective lenses stage stage clips stage opening condenser iris diaphragm mirror U-shaped platform that supports
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beetroot hence a higher the rate of diffusion. Equipment Reasons for use… Colorimeter The colorimeter will measure the amount of light absorbed by the pigment in beetroot. The higher concentration of anthocyanin equals a higher reading on the colorimeter. A colorimeter will give an accurate measurement of the light absorbed by the pigment. The precision of the colorimeter is to two decimal places. I must make sure the cuvette has no finger prints on the clear side as the prints may absorb light
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Background Theory Photosynthesis: Plants require water from the soil‚ sunlight and carbon dioxide found in the atmosphere for growth and development. In the process of photosynthesis‚ carbon dioxide and water – in the presence of chlorophyll and light energy – are converted into sugar and oxygen‚ which is given off as a by-product. Generally‚ as sunlight increases in intensity‚ the rate of photosynthesis also increases [1]. This means greater food production within the plant. Many garden vegetables
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Cortex of the hair is located between the medulla and the hair cuticle. It is the thickest part of the hair. It contains most of the hair pigment‚ giving it its color. This is often in finding out what color of hair the suspect or criminal had. The final part of the hair is the outermost part‚ known as the cuticle. It is a hard shingle like cover that is the first line of defense against any damage to the hair. It does not provide the pigment of the hair. It protects the other two layers of the hair. Hair can
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Indicator Indicators are chemical compounds that can be added to a solution to determine whether it is acidicor alkaline. The indicator will change colour depending on whether an acid or an alkali is added. The colour in red cabbage (it is a pigment called an anthocyanin) makes a very good indicator. Acids and alkalis Acids have a sour taste‚ like vinegar (which contains ethanoic acid) and lemons (which contain citric acid). Alkalis are substances that react with acids and neutralise them. Soap
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from the FSAA and the length of time the flow lasted revealed that shredded tilapia scales were most effective in retaining the pigments. Scanning electron micrographs of the surface of tilapia scales revealed porous tooth-like structures called sclerits. These pores along with particles scattered on the interspacing between sclerits’ particles were inferred to bind the pigment. Based on the effective filtration features of the tilapia fish scales‚ it is suggested that the scales be used in wastewater
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There are two different types of gallstone‚ cholesterol stones and pigment stones. Cholesterol stones are made up of cholesterol and are a yellow-green color while the pigment stones are a darker in color and made up of bilirubin. The pigment stones are what are caused by lead exposure and the amount of exposure to lead to create these pigment stone differ from person to person. However‚ the increase in bilirubin is the result in the increase of hemolysis
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Evidence: The process of photosynthesis requires sunlight for its nutrients to make their way into the chlorophyll on green plants. This suggests that without direct sunlight‚ photosynthesis will not be completed correctly or the plants functions will not work properly. Majority of plants that undergo photosynthesis have chlorophyll stored within them‚ it is what gives them their green color. However‚ there are few species of plants that don’t acquire chlorophyll‚ but still undergo the process of
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Chemistry of cosmetics Few people would whip out a chemistry set‚ uncork the vials‚ and slap the compounds on their face. Yet‚ millions of women and girls essentially do that every day when they unzip their makeup bags and apply lipstick‚ mascara‚ and other makeup. Like the compounds in a chemistry set‚ makeup consists of chemicals. Although the chemicals in cosmetic products are intended to improve the appearance of skin‚ lips‚ and lashes‚ some can cause adverse effects. Emulsions The majority
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we can physically see. For example‚ there is a gene that produces protein involved in the production of melanin (skin pigment). When this gene is mutated or non-functional‚ the enzyme is not produced. Hence‚ the pathway of melanin production is shut down and that person does not produce any melanin pigment. This is what we see and call as albinism‚ the people without any pigment in their skin‚ hair and eyes 3. Describe each stage of the flow of information starting with DNA and ending
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