"Onion plasmolysis" Essays and Research Papers

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    Lab 2

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    the actual results were the same. Exercise 2: Testing for Sugars Observations Data Table 2: Benedict’s Reagent Results. Test Sample Predicted Results Benedict’s results #1 Glucose Contains sugars Red #2 Starch Contains sugars Blue # 3 Onion juice Does not contain sugars Orange #4 Distilled Water Does not contain sugars Blue Which substances

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    Molecules

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    starch 3 Onion Juice Ketchup red‚ gold tint Contains a slight amount of starch 4 Potato Juice Black brownish Contains starch 5 Glucose solution Amber red Does not contain starch Our results were accurate and did not contain any unexpected results. Since water and Glucose shouldn’t contain starch they appeared to be yellowish-brown. But starch suspension‚ onion juice‚ and potato juice should contain starch and therefore changed color. Potato: . . Onion: Under the microscope onion did not

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    effectively described how love is like an onion‚ whereas Walsh has described her ideal relationship by using symbolic metaphors. ‘Valentine’ is a poem about the ideal gift to receive on Valentine’s Day. Most people would not associate an onion to being a symbol of love. A rose is more commonly known to perhaps symbolise the beauty of the person that is receiving it. However Duffy has successfully matched the aspects of love to the properties of an onion. She has turned an ordinary dull object into

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    Lab Manual

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    Writing of Lab Reports __________________________________________________________________________ W hy should I bother writing lab reports in the correct way?” The Foundation Programme is designed to prepare you for undergraduate studies at UTAR which will require the writing of lab reports all years generally. At the end of your third year‚ you may have an opportunity to work on scientific projects which will culminate in an official scientific report. Depending on the quality of your report

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    Data Table 2: Benedict’s Reagent Results. Test Sample Predicted Results Benedict’s results #1 Glucose none positive #2 Starch none negative # 3 Onion juice Sugars present positive #4 Distilled Water none negative Questions A. Which of the test tubes are used as the positive and negative controls? The positives are 1:glucose and 3: onion juice. The negatives are 2:Starch and :4 water. B. How did the predicted results compare to the actual results? I was wrong in thinking starch would

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    prokaryotic cells do not. The differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts‚ the cell wall‚ and the structure of chromosomal DNA. In this lab four cells were observed and they were Onion Epidermis Cell stained with Iodine‚ Elodea Freshwater Plant Cell‚ Epithelial Cells aka Human Cheek cells stained with Crystal Violet‚ and Unknown Cell. The difference between animal and plants cells is that animal cells does not have a cell wall or

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    tubes * Spatula * Onion * Ethanol (70%) * Filter paper * Table sugar (sucrose) * Table salt (NaCl) * Potato EXPERIMENT 1 PART 1 Procedure: 1. The epidermal layer of an onion is scaled off carefully and placed on a drop of distilled water on the glass slide; 2. The glass slide is slowly lowered down on the epidermal layer using the needle; 3. The onion cells are examined through the microscope; 4. The structure of the onion cells is drawn as observed

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    also love is an emotion with two separate sides‚ we can experience both happiness‚ and grief. Duffy introduces her famous love poem with a short sentence as her first stanza to create more of an impact‚ and to catch our attention. The use of the onion‚ a dull household object as an extended metaphour for love makes the reader more attentive to the poem‚ which forces us to read. Duffy starts with the adverb “Not‚” portrays the sense of confidence in rejecting the traditional symbols of love‚ due

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    Your Own: Craft your very own specialty pie by selecting from Papa Rocco’s extensive list of toppings. Choose from sausage‚ onions‚ pepperoni‚ green peppers‚ mushrooms‚ ham‚ black and green olives‚ anchovies‚ extra cheese‚ bacon‚ Canadian bacon‚ pineapple‚ and more. Papa Delux Pizza: Enjoy the restaurant’s “Delux” pizza‚ which features yummy sausage‚ pepperoni‚ mushrooms‚ onions‚ and green

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    DNA Extraction

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    2013 DNA Extraction on Onion (Allium cepa) and Human Cheek Cell Arriza‚ Rolland Merch Buscato‚ Carl G. Butil‚ Conrad G. Leonida‚ Renee Theresa ABSTRACT This activity observes the DNA present in onion (Allium cepa) and human cheek cells by extracting it with the addition of lysis buffer and chilled ethanol. The lysis buffer is prepared from squeezed onion mixed with salt and Pantene Pro-V Shampoo. The buffer degrades the protein enveloping the DNA found in onion and cheek cells Cheek cells

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