Introductions
Osmosis is the process in which a molecules move from a high concentration to a low concentration, through a semi-permeable membrane separating the two substances. The flow of the solvent stops when both solutions become equal . Osmosis is a type one of the many different types of diffusion. In this investigation we testing which solute will have concentrations equal on both sides or whether or not it will be higher or lower. The two main passive diffusion and facilitated diffusion.
• Passive movement is the movement of molecules across a semi-membrane without the help of protein channels.
• Facilitated diffusion is the flow of molecules down a concentration agent, across a membrane , but requires the help of a protein.
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Osmosis is the free movement of water molecules across a semi-permeable membrane, down a membrane. There are three different types of osmosis that affect living cells which are organic. We have hypertonic, hypotonic and isotonic.
• Hypertonic : water diffuses on the outside of the cell.
• Hypotonic: water diffuses on the inside if the cell causing it to swell with water and to sometimes even burst.
• Isotonic: concentration doesn’t increase or decrease in the inside or outside because the water molecules move freely in and out the
concentration gradient- When there’s lots of molecules of something they will move to the area where there’s less molecules until the amounts are equal. 11. countercurrent exchange- when two fluids flowing in reverse directions transfer a substance to each other. 12. diffusion-
All organisms need oxygen to survive and when their is not enough oxygen, it leaves plants and animals to die. The area of water where there is a low count of oxygen are often called a dead zones. Also, an increase of the pH level in the water can be created because of algae blooms. The toxic killing algae can make humans sick. For the aquatic animals, these toxins attack mainly the organisms liver and nervous system (Nitrogen and
Introduction The intent of this experiment is to understand how hot and cold water interact with each other by combining clear hot water and black ice cold water. I hope to learn more about how hot and cold water interact with each other. As of now, I know that cold water is denser than hot water. Knowing this I formed my hypothesis.
Part A: Osmosis practical task Aim: To observe the effects of osmosis in rhubarb cells. Hypothesis: Water will be extracted out of the cells in the salt solution causing the cells to look different to the cells in the freshwater solution. Materials: Rhubarb Distilled water in a dropping bottle Salt solution in a dropping bottle Microscope, slides, and coverslips Forceps and razor blades or scalpel Paper Towel Method: Clean and dry a slide and coverslip.
When temperature is increased, the amount of obtainable energy increases; meaning that particles will move at faster pace at a higher temperature. Thus rate at which molecules diffuse will progressively speed up as the temperature increases. However if temperature of solution is decreased the rate of osmosis will decrease and rate at which molecules diffuse will be significantly less than that of higher
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.
What is the effect of surface area to volume ratio on the rate of diffusion of the colour from the agar jelly cube? INTRODUCTION: Diffusion is the movement of spreading particles from high concentration to low concentration in an environment such as a cell. This major procedure is used in cells to source them with nutrients, water, oxygen, and to transport unwanted wastes such as carbon dioxide out of the cell or to different cellular organelles.
More specifically the aim was to investigate what effect 40% and 70% ethanol solutions had on a B. Vulgaris cell membrane and then compare them to the same test with distilled water. It was hypothesised that the ethanol solution would increase the membrane permeability. From the results the hypothesis can be supported. Cell membranes are a core aspect of understanding cells which helps to understand humans and other living creatures. Therefore the topic of cell membranes has been extensively researched, meaning that there is no limit to information and sources of information of the subject.
Active transport is when passage of materials using energy. Passive transport is the passage of materials using kinetic energy. Molecules doesn 't have a preselected motion, and are always on the go. If the molecules was to clash to have a clash or have a run in with the membrane they would recover. If the pore is open the molecules will move towards the open pore and sometimes there 's a possibility that it would recover and go through.
Osmosis Lab Report Research Question: How does the change in the concentration of a sucrose solution affect the process of osmosis in a potato cell by measuring its mass? Background information: 1 Osmosis is the process by which a liquid passes through a semi-permeable membrane, moving from an area with a high concentration of water to a low concentration of water. There are various factors that affect osmosis such as: concentration, surface area and temperature. The concentration of solutions can affect the rate of osmosis, as there is more difference in the concentration of the solutions, which means osmosis, will take place quicker. Surface area could affect osmosis based on the ease by which molecules can get through the semi-permeable
5. 150 ml of the solution in beaker A was added to the separating funnel with 10ml of chloroform. The funnel was gently shaken and vented to release the pressure. This was done five times. 6.
An egg naturally has a lot of stuff inside, so the outside solution has to be very concentrated for this to happen. That’s the case when an egg is treated with corn syrup or buried in salt. By contrast, when an egg is treated with distilled water, or a dilute salt solution, the solute concentration is higher inside the egg than out, so the water moves into the egg, increasing its mass. It may be easier to think about osmosis in terms of water concentration rather than solute concentration. If the solute concentration is high, then the water concentration will be low by comparison.
There are three major components of water potential and one of them is solute or osmotic potential (the amount by which water potential is reduced by the presence of solute
Introduction Solubility is a chemical property that is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. The resulting solution is called saturated solution. For example when a sample of sodium chloride solution in water is heated the behavior of the reaction is endothermic obstructing exothermic behavior. Another relationship that can be said about solubility is that the solubility of a solid substance increases as the temperature increases. The solubility of solutes is dependent on temperature.
Saturated- The solution is full and contains the maximum amount of dissolved solute for that given temperature. No more solute can be dissolved in the solvent. This condition can be represented by a point on the solubility curve.