Water Potential Osmosis Experiment

The constant movement of solutes and water across cellular membranes is an overarching concept that helps to maintain cells’ growth and dynamic homeostasis. Water potential, the measure of the relative tendency of water to move from one area to another, takes into consideration the concentration of free water molecules. It is calculated using the following formula: water potential (Ψ) = pressure potential (Ψp) + solute potential (Ψs). The water in an organism moves down a concentration gradient, from an area of high water potential to low potential.

It is intriguing to think an inanimate plant has evolved to the point that it can quickly react to the stimulation of touch. The most common explanation among environmentalists and ecologists is that is a quick alteration in the turgidity of the plant cells. That means there is a change in the pressure of water located inside of the cells. These cells are located in the lower part of the midrib. Although it is not as simple as stated, it is true that the lower midrib cells consume more water.

The answer to our question in our introduction is that duckweed plants grow better in medium amounts of water. In this case, specifically 500 ml of water. Our hypothesis, however, was incorrect, for we believed the duckweed would grow better in the small amount of water. We had many errors in our experiment. For example, when we had the beakers on the window sill, the sun had evaporated some of the water.

For this lab I will be using water and sucrose to demonstrate the rate of osmosis. 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.

Further, in order to absorb water and other nutrients from the soil the roots were developed to anchor the plant to achieve this purpose. Material transportation: In the water, different parts of the plant get nutrients and water directly from their environment,

Applying the idea of learning in plant systems certainly makes for fascinating future ideas and research. The mimosa pudica in itself is enough to stimulate new testing with its unique capabilities and

By using the same mass of potato slices and putting them in different concentration of solutions for a specific amount of time will tell us how the concentration changes the mass of the potato slice. Therefore changing the rate of osmosis. Hypothesis: I predict that, if the piece of potato was put into a solution that has a high concretion of sucrose then the potato slice would lose mass as it would lose water from its cells because the water is moving out of the cell from a high concentration to a low concentration of water through a semi- permeable membrane. The cell is hypotonic and the solution is hypertonic.

The lab that I did was elodea leaf lab, where me and my partners have to gets a blank glass, take a little leaf out of the water, and put a drop of its water into the glass before putting the lid on. After carefully observed the leaf by using the x65 lens, we puts a drop of salt into the leaf and closed the lid to see how the chloroplasts changed under the microscope. We were basically analyzing the changing of the chloroplasts shape after we puts the salt solution into the elodea leaf. The purpose of our lab was to see how salt solution can affect the elodea leaf cell.

In this experiment, we are determining how the osmosis is effected when the salt solution is diffused on the elodea leaf cells and it organelles. The steps we took to solve this dilemma to determine the effect of the solution on the elodea leaf, was first to get two leafs from the elodea plant. Then we created the different salt solution in two tubes to later add in the slides.. As a class we seperated into our groups, we each place a leave on a slide to see it cells before contaminating it with the solution. After we examine the leaf, we added the 5% salt solution on the leaf slide and check the results.

So to learn more about the levels of ph research was needed. Investigating ph levels and getting research was the first part to this project. First off what is ph, and what does it mean? PH of water is the potential hydrogen. Potential hydrogen means how much hydrogen is in the water.

Lastly, osmosis is the diffusion of a solvent, such as water, through a selectively

of water varying slightly from person to person. We consume water from drinking it and also from the food we eat such as watermelons. We also get a tiny percentage of water given out through the process of respiration. Water is a universal solvent. Water in our body acts as a solvent for solutes such as amino acid, glucose, urea, lipids (non electrolytes) and electrolytes (which break up into ions) such as Na+, K+ to be dissolved in.

Research Question: How does the presence of light impact the rate of transpiration in plants? Aim: The aim of this experiment was to investigate how the presence of light affects the rate of transpiration in plants. Hypothesis: As light intensity increases, the rate of transpiration (water uptake) in a plant increases.

The percentage weight change is dependent on surface area of potato Controlled The amount of salt solution used Percentage of salt in solution Length of time the potato is sat in water Materials needed 3 Potatoes 600 ml 15% salt solution Utensils 4x 300 ml beaker Knife Cutting board Scale Ruler Procedure 1. 8 rectangular prisms will be cut from the potatoes;

Introduction Plants are a major necessity in the balance of nature, people’s lives, and our terrain. We may not realize it, but plants are the ultimate source of food for almost 95% of the world population so says the National Group of Food. It’s a fact that over 7,000 species of plants are being consumed today. Plants are one of the reasons that we get clean water; as they help regulate the water cycle.