Advantages And Disadvantages Of Osmosis

In order to become a developed civilization, a country needs a stable resource supply. The Nile River provided all of the necessary resources for Egypt. You need a stable water supply to keep your population stable. Farmland helps you with trade with other countries for other goods and or money. Transportation will allow you to make those trades as well as to travel to other countries to see how to improve your country.

In our gummy bear lab experiment, we experienced osmosis, the water version of diffusion. My lab partner, Maggie, and I were given two yellow gummy bears. The first one measured at 10 mm in both thickness and width, and 21 mm in height. The approximate volume was 2,100 mm^3, and the mass was 2.567 grams. The second one was 11 mm in thickness, 9 mm in width, and 20 mm in height. The volume was 1,980 mm^3 and the mass was 2.56 grams. After our initial measurements, we placed the first gummy bear in a plastic bag and sealed it. Then we gently dropped the other one in 150 mL of water. We then let both of those sit for 24 hours.

Following Michael Pollan’s view in his book, The Omnivore’s Dilemma, he covers the realm of concentrated animal feedlot operations (COFAs) in his extensive spiel about the overarching concept of corn in our society. He discusses his purchased steer, number 534, as he accompanies its journey through the system. In the beginning 534 enjoyed his life on a green pasture with his mother for six months, until he became strong and bulky enough to get a change of scenery. He was then transferred to a lovely place called a backgrounding pen; where 534 learned to live in a pen, eat from a trough, and to consume a new diet. Pollan’s observational study lead him to find many complications regarding COFAs and their effect on the environment. These would

Osmosis is the net movement of water going from high to low on the concentration gradient. During this experiment we observed osmosis when we put an egg into corn syrup. When we placed the egg here the water moved from high concentration to low so the water in the egg moved out, this created a hypertonic environment.

In the last few decades, water shortage has become a substantial issue for both developed and developing nations. With the increase in the global population and industrialization, the demands for fresh water have skyrocketed. Desalination is suggested as the most viable fresh water resource to solve the water crisis. This essay will evaluate the arguments both for and against dependence on desalination to obtain a supply of fresh water. These will be demonstrated by focusing on the environmental and socio-economic impacts.

Biology, the study of life and living organisms, is complex and encompasses a multitude of theories and ideas. In AP Biology, the first unit covered was evolution. Chapters 29, 31, 39, 40, 41, 42, and 43 in the textbook, Campbell’s Biology in Focus, not only discusses the four main ideas of biology: evolution, energy, information, and systems, but it also gives examples of each in order to help guide the reader’s understanding of the concepts.

Cell membranes are the semi-permeable membrane that surrounds all cells. It separates the extracellular environment from the intercellular environment. It is a phospholipid bilayer which contains various proteins, lipids and carbohydrates all serving different purposes. It is this structure which allows for the transport of nutrients, proteins and water. (Nature.com, 2014). Through extensive testing it has been found that small alcohols, specifically ethanol can increase the fluidity and membrane permeability of the phospholipid bilayer (Patra et al, 2005). The aim of the experiment was to test what effect that ethanol solution would have on the membrane

In this lab we used two processes called Diffusion and Osmosis. Diffusion is the movement of molecules from areas of high concentration to areas of low concentration. Diffusion is a process that requires no energy and involves smaller non-polar molecules. In Figure 1 you can see the molecules spreading throughout the glass from the area of high concentration, so that the areas with low concentration are filled evenly as well. The other process was osmosis. Osmosis is the diffusion of water through a membrane from an area of high contraction to an area of low concentration. Osmosis happens in three different environments. Osmosis is like diffusion in it requiring no energy.

In this lab I will be exploring how temperature impacts the rate of osmosis by placing pieces of potato of equal size in solutions of different temperatures and observing the change in mass of potato after a given period of time. The change in mass will indicate the rate of osmosis.

This experiment is an attempt to investigate the amount of water potential across root storage plant species. The root storage plant species that shall be used are the carrot and the potato and the method that shall be used is known as Chardakov’s method. Water potential is the tendency of water to enter or leave a cell. Water moves from an area or region of low water potential to an area of high water potential. It is important to note that the highest water potential is 0(the water potential of pure water) and the other water potential values are in negative numbers .

When you put an egg in vinegar, we see that the shell dissolves, but do you ever wonder why? An egg is made mostly out of calcium carbonate which reacts with an ingredient in vinegar, acetic acid. Acetic acid is about 4% of the vinegar and what breaks apart the solid calcium carbonate crystals. The bubbles we see, from the egg, is the carbonate that make carbon dioxide and the other calcium ions float free. This is the equation:

In this lab when looking at cells, we observed the salinity and osmolarity of the cell when placed in the environment. With the different concentrations of NaCl, we are able to see how different environment can constrain an organism and see the wide range of responses to regulate in cell’s osmolarity. The cells we studied was sheep red blood cells (erythrocyte), because they are the most studied membrane system and therefore used as ideal membrane to study the relationship between water and the passing of the different concentration of NaCl across the membrane.

Advantages: - water turns of safe to drink and it is not dangerous or isn’t hazardous to any living thing.

It justifies the idea that increasing the concentration of sucrose does in fact speed up the rate of osmosis, an therefore increase the mass of the Visking tube. This happens due to the water molecules moving from a high water concentration to a low water concentration. Another reason why this hypothesis is correct is because sucrose particles are too large to go through the membrane therefore the sucrose does not diffuse into the water. According to the mean graph there is a clear outline that indicates constant acceleration, which justifies that the increase of the independent variable affects the dependent

By the year 2025, the Philippines is believed to be brought to a water crisis if no new sources of water are developed or found to meet the growing demand of the citizens. (Sapnu, R., Balabo, D., & Cervantes, D., 2007) "There is a Japan International Cooperation Agency study that says that if we will not conserve water, there may be some problems. But of course we can always start conserving now and look for other sources," Lopez (2013) said. Studies have shown how water conservation and appropriate water utilization are significant as early as today.