I have been asked to investigate the effects of osmosis on potato cell sap. I will test potato cylinders in different strengths of sucrose solution and record any results in a table. I will then analyse my findings and work out the isotonic point of the potato cell sap. Prediction I have looked at my scientific knowledge from the background theory I carried out and I will base my prediction upon this information. In this experiment‚ I expect the different concentrations to show fairly noticeable
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SUMMARY‚ COMCLUSSION AND RECOMMENDATION The main objective of the study was to develop sweet potato cookies. Specifically‚ it sought to (a) evaluate the sensory qualities of sweet potato cookies in terms of appearance‚ odor texture and taste. (b) determine the most suitable treatment based on general acceptability. (c) determine if there is a significant difference on the proximate composition between control and the most acceptable treatment in terms of moisture‚ ash‚ crude fat‚ and protein
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test the difference in enzyme activity on fresh liver were; 4 °C‚ room temperature which was 22°C‚ body temperature which is 37°C‚ and 77°C. The total time of each trial was 2 and a half minute‚ 1 minute for the H2O2 to acclimatize to the temperature‚ 1 and a half minutes for the reaction to occur. Catalase causes Hydrogen Peroxide to break down into water and oxygen. Therefore the difference of enzyme rate reaction was determined by putting liver into hydrogen peroxide mixed with detergent and the
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pressure exerted on either side of the semi-permeable membrane. A potato (Solanum Tuberosum) contains 92% water‚ which is an osmotically active component. The precise osmotic potential of sweet potatoes is however unknown. The osmotic potential of sucrose is know to be at 20 oC‚ the osmotic potential of sucrose is 2.436 MPa2. The rate of osmosis will be calculated by measuring the percentage change in mass of a piece of potato‚ that has been submerged in a specific concentration of sucrose over
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Since the Grignard reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed
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Josh Huggard Mr. Neale SBI3U1 November 6th‚ 2014 Spit and Armpit Lab Partners: Kara Washer and Josh Young Abstract This lab shows the use of salivary amylase with strong and weak starch mixtures to break down complex carbohydrates into simpler sugars. This lab was conducted to physically see the breakdown of carbohydrates into simpler sugars (glucose‚ fructose‚ galactose) using the salivary amylase enzyme. This is extremely important to all metabolic functions in the human digestive system. It
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Look again at ‘At a Potato Digging’ by Seamus Heaney and at ‘A Sheep Fair’ by Thomas Hardy‚ which both deal with the theme of the hardship of rural life. With close reference to the ways each poet uses language‚ compare and contrast what the speakers in the poems say about rural life. You should include relevant contextual material. Which poem do you find more interesting? Give your reasons. Seamus Heaney and Thomas Hardy both depict images of rural life as difficult and uncomfortable. In their
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Couch Potato Reviews Modern Family The Trip of a Lifetime? Could a holiday with three kids possibly be turned into a honeymoon? Or will it all end in disaster? Hello‚ internet‚ we here at Couch Potato are visiting Modern Family‚ and today we will be reviewing a classic episode from way back in Season One: “Hawaii”. This beautiful classic “Hawaii” has a delicious taste of comedy only to be found in the Modern Family series. The family has gone on a trip to Hawaii for Jay’s birthday‚ and Phil wants
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Eugenia Collier “SWEET POTATO PIE” Sukhanova E. LP31/2 Eugenia W. Collier (born 1928) is an African-American writer and critic best known for her 1969 short story "Marigolds". She was born in Baltimore‚ Maryland‚ USA. Collier ’s collection‚ Breeder and Other Stories‚ was released in 1993. She has also published a play‚ Ricky‚ based on her short story of the same name. Other texts that Collier has written or contributed to include are Impressions
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solution. The purpose of this lab was to find the water potential of a potato cell. The problem of this lab was‚ if there was a high molarity of solute‚ would it have a positive or negative water potential? The hypothesis of the experiment was‚ if there is a high molarity of solute then the water potential would be lower or negative. After obtaining potatoes‚ we cut them into pieces‚ weighed them‚ and then placed them in a solution overnight. In this lab‚ we explored the potato cell’s water potentiality
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