We let them soak for 20 minutes than we removed them from the test tubes. Next we measured their new weights and recorded them. They were; 10% NaCl decreased by 4%, 15% NaCl decreased by 8%, and 20% NaCl decreased by 12.5%.The results showed us the conclusion that the potatoes were hypertonic to the deionized water and were hypotonic to the sodium chloride solutions. Introduction: The objective of this experiment is to detect diffusion and osmosis in potato cells in 3 solutions. Diffusion is the spontaneous spread of molecules from an area of high concentration to an area of low concentration.
Plain baked potatoes instead of French fries and high-fibre, fortified cereals instead of high-fat doughnuts would be healthier. Small changes like these could improve her diet dramatically. “Try not drinking so much soft drink,” Mary suggests. “Bottled water or a glass of milk would be much more beneficial.” “I can’t drink milk!” Clara says. “Last time I had a glass of milk, my stomach hurt for hours.
Too little magnesium in our diet can trigger headaches and fatigue. Magnesium-rich foods include dark, leafy greens, soybeans, salmon and pumpkin seeds. Raw vegetables. Munching on raw veggies will help release that clenched jaw and ward off tension. Serotonin boosters.
This assignment will evaluate the importance of homeostasis in maintaining a healthy functioning of the body. If homeostasis did not work properly in the body then there are many problems that could arise. Diabetes is one of those problems: Diabetes Diabetes is “a permanent change in your internal chemistry that results having too much glucose in your blood” because the body cannot use it properly. (Rudy, 1999, Page 10) Glucose comes from digesting carbohydrates and is also produced by the liver, carbohydrate comes from many different kinds of foods and drink, such as Wholegrain cereals such as Weetabix and Shredded Wheat, Brown rice, Pasta and Potatoes. “Diabetes can be tackled in different ways- by insulin and diet” (Rudy, 1999, page 19) Diet, when someone had diabetes it is best for their health to cut right down on the unhealthy foods, and stick to the health foods, this is due to the effectiveness of the medication you are on.
(Damon, )Since the movements of substances in passive transport take place from an area of high concentration to an area of lower concentration until both areas reach equilibrium, the water molecules will move from the potato strips to the sugar solution when there is less water concentration in the solution. Therefore, this means that as the sugar solution concentration increases, there will be more sugar molecules in the solution and less water molecules, therefore lowering the water concentration in the solution, causing the water molecules from the potato strips to move from the higher concentration area to the sugar solution with lower concentration. Vise versa, when there is lower concentration of sugar solution, there will be an increase of water concentration in the solution, therefore water molecules will move from the solution to the potato strips where there will be a relatively lower water concentration. IV) Variables: Independent- concentration of sugar solution (mol per dm³) Dependent- change in length of potato strip (cm) Control- initial length of potato strips (2cm); type of solution (sugar); type of potato b) Controlling Variables I) Independent: - The concentration of the sugar solution would be changed by using different volume of solvent to dilute the solute which would be measured by the
“Fibers that cannot be digested by bacteria in the large intestines are called insoluble fibers because they do not dissolve in water.” (Grosvenor & Smolin, 2006) High fiber diets can produce many benefits, including higher nutrient absorption levels, and better waste output. Diets that tend to lack in fiber or are high in insoluble fiber tend to cause gastrointestinal irritation and constipation. People that experience these symptoms should consider reviewing their fiber sources, and water consumption
However, using the juicing method would require a large amount of vegetables to obtain the desired 12 ounces. It would also require more effort to chew the amount of vegetables that would be equivalent to 12 ounces of vegetable juice. According to Hellawell (n.d) “Apart from preserving intact the vital nutrients contained in fresh fruit and vegetables, juicing also gives an additional advantage over simply eating raw produce. It allows us to obtain the nutrition from raw produce in greater quantities than chewing can achieve.” While looking for articles I came across one on how marijuana plays a role in juicing. Studies have shown that juicing marijuana in raw form can help normalize functions of our bodies.
Fiber is an important function in the body because it aids the digestion process from start to finish. Because fiber is usually a thicker substance and requires food to be chewed more slowly, it slows down the rapid eating process and helps the stomach feel fuller. This aids in preventing obesity from overeating. Foods that are usually rich in fiber are heartier to eat, making the contents that go down in the stomach more bulky and stays longer. The process is for digestion is slowed down by the weight so when the glucose from the food enters the bloodstream at a slower pace, it regulates the blood sugar at a more even level.
If the area around a cell has a higher water concentration it will gain water by osmosis. This is because the water molecules surrounding the potato cell are able to pass freely across the cell membrane in both directions; therefore more water will enter the potato than will leave it so it will swell up. Furthermore, if the area around the potato’s cells has a lower concentration of water than the cell will loose water by osmosis due to more water diffusing out through the partially permeable membrane than entering the cell, this will lead to a reduction in the size of the cell. When the concentration of water molecules in the potato is near equal to that of the area around it, the rate of osmosis will decline and the cell will stay the same size, as there is an equal amount of water entering the cell than there is leaving it. Below is a drawn diagram showing the process of osmosis.
Solutes meaning: the substance that is being dissolved, while solvents meaning: substance being dissolved into, much like diffusion. Diffusion can be defined as particles that move from a higher concentration to areas of lower concentration. Diffusion is one of the key processes involved in the movement of materials into and out of cells throughout living systems. Osmosis is the diffusion of the water through a selectively permeable membrane from an area where it is more concentrated to an area where it is less concentrated. Different solutions can be categorized as hypotonic, hypertonic and isotonic as different concentrations.