water to a 400- to 500- ml. add a few drops of solution till it turns an amber-yellow color. Leave bag in beaker for 30 minutes. Remove bag then let it dry. Record observations. Experiment 3: Obtain 7 equal size bore hole cylinder from the potato‚ cut roughly to the same size record the length and weight of each making sure they remain order. Next is to collect 7 cups filled with 100 ml of the 6 different concentrations of glucose (‚ 0.1 0.2‚ 0.3‚ 0.4‚ 0.5‚ 0.6‚ and water). Record the time
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distinctive conical cap with flap extending down over the back of the neck.” It would be plausible that the men would wear little clothing and a hat to block the sun in an arid and hot land such as this desert region. They are also shown holding plants or digging sticks in their hands. Warriors were depicted with their full face showing and usually painted. The men would be holding weapons and were more elaborately clothed‚ including wearing a shirt of some sort along with the loin cloth. “Headdresses range
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to a traditional story‚ the original potato chip recipe was created in Saratoga Springs in New- York . George Crum‚ a half black‚ a half native American Cook ‚ at Moon`s Lake house‚ wgo wad trying ro appease an unhappy customer. He sliced the potatoes very thin ‚ fried them In the 20th century‚ potato chips spread beyond chef-cooked restaurant fare and began to be mass produced for home comsuption. The Dayton ‚ Ohio-Based Mike-sell`s Potato Chips Company‚ founded in 1910‚
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membrane will push against cell wall‚ causing the cell to become turgid. However‚ animal cells do not have cell wall and huge gain of water molecules will cause the burst of the cell. The main purpose of this practical work is to observe the osmosis in potato cubes‚ onion epidermis cells and visking tubes. To examine the effect of different concentrations of sucrose solutions on the plant cells and dialysis tubings. Hazards Precautions Sharp knife‚ scalpel‚ broken glass may cause injuries. Wear lab coat
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cubes of potato would gain or lose weight depending on the amount of molar concentration of sucrose they soaked in. Solutions made of different molar concentrations of the solute sucrose were prepared before this lab. Potato cubes were weighed and recorded as the initial mass in the data. Four cubes of potato were placed into 100 mL of each solution and let stand overnight. The cubes were then taken out for the final total mass to be measured and recorded. In this experiment‚ the potato cubes were
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increase the reaction. As I increase the surface area of the potato the gas given off from the reaction will increase. Therefore to sum things up‚ my hypothesis is when the Independent variable increases so will the dependant variable. Independent variable: - Surface area of potato Dependant variable: - Gas Controlled variable: - Equal size of potatoes used - Using measuring cylinder Equipment used: - Gas collecting kit - Potato - Stop watch - Test tube - Distilled water - Hydrogen
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molecules of the substance are moving from an area of higher concentration (outside of the cell) to an area of lower concentration (inside the cell) (Hammel & Schelegel 2005). Therefore‚ the water was moving into the cell‚ causing the potato cell to increase in size. The potato appeared to be quite turgid and swollen through observation. The 3% salt solution resulted in the least weight gain (g) because the solution is hypertonic – a hypertonic solution results in the water diffusing out of the cell because
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agricultural company‚ introduced this new breed of potato in 1995. This modified potato contained a gene from a soil bacterium that was inserted into the potato’s DNA. This gene helped to kill the Colorado potato beetle without the use of pesticide sprays. Public concern for the New Leaf potato began to grow. Fast food chains such as McDonald’s and Burger King‚ quietly urged their French-fry suppliers to stop using the genetically modified potato. People didn’t like the idea of eating something that
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effect of different concentrations of sucrose on the mass of a potato cell. Results for Part One suggested that the molecular weight of albumin and starch was too large to pass through the dialysis tube‚ but glucose and sodium sulfate molecules were small enough to pass through the dialysis tube. Also‚ a decrease in water weight occurred due the dialysis tube being placed in a hypertonic solution. Results for Par Two showed the potato cell having a molar concentration of 0.2734‚ which caused sucrose
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This report was written to explain and present the results gathered in a precise and organized manner. This experiment was divided into two parts. The first part concentrated on the placing potato cylinders in different sucrose concentrations for a period of time. This part was conducted to see if the potato cylinders would gain weight or lose weight because of osmosis. The second part was conducted to see if a dialysis bag‚ filled with sodium sulfate and starch solution and placed in an albumin/glucose
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