Osmosis - Free Essay Examples and Topic Ideas

Investigation of Factors Affect Osmosis in Potatoes Aim The aim of the following experiment was to investigate the effect of  varying the concentration of sucrose solution on osmosis in a potato. Preliminary Experiments One preliminary experiment was done before the main experiment. From  the preliminary, we were trying to find out how osmosis actually  occurred in potatoes, and gave us a vague idea on what the main  experiment would be like. This preliminary will aid my prediction, which is stated…

The aim of this experiment is to find out how the mass (in grams) of potato tissue changes when placed in varying concentrations of Sucrose. Apparatus: Cutting tile - to cut the potato on Knife - to cut the potato Graduated pipette - to fill the bottles 25cm Measuring cylinder - to measure solutions Distilled water - to act as a control The following Sucrose solutions 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0 molar concentrations -…

For my experiment I will be investigating the water potential of root vegetables. The vegetable I am going to use is turnip. I am going to use turnip because it is a uniform vegetable. This investigation is about osmosis. "Osmosis is the net movement of water molecules from an area of high water potential to an area of low water potential. This takes place through a partially permeable membrane." Water potential is the potential energy of the water molecules on…

My Aims * I am aiming to find out what affects the rate of Osmosis. * To do this I am going to use temperature as a variation and my aim is to use it successfully. Prediction I predict that the warmer the water, the faster the rate of Osmosis occurs. I believe that Osmosis will occur when the water is at 10 but when the water temperature increases to higher temperatures e.g. 50 I believe a greater amount of…

To investigate and find the water potential of baking potatoes and sweet potatoes in (N/mm2) using various strength solutions of sucrose (mol) Hypothesis I believe that the baking potatoes will have a less negative water potential. In the experiment they will not increase in mass at a lower of sucrose molarity than the sweet potatoes. Baking potatoes contain more water than sweet potatoes. This is clearly obvious, cut a baking potato into cubes and it releases a lot of water,…

To observe whether equal sized white potato or sweet potato cores reached the isotonic point in the same concentration of sucrose solution. Introduction: Osmosis is diffusion of water from areas of high water potential to areas of low water potential. It does not require an input of energy. Plants use osmosis to transport minerals from their roots to their leaves, and to take in water in the soil. Because the plant cell is taking in water and minerals, its mass…

My group and I conducted the experiment that estimates osmolarity by change in weight of potato tubers, this was conducted in order to explore the process of diffusion and osmosis and more importantly to investigate the question of “Does different concentrations of sucrose solutions have an effect on the final weight for the potato tubers?” In this experiment we estimated the osmolarity of potato tuber cores by submersing different potato cores into sucrose solutions of 0.0-0.6M, and weighing the potato.…

The cell is invaluable building block of all biological life on this planet, and one of its most important and unique characteristics is its ability to be selectively permeable with its plasma membrane. This outer membrane’s sophisticated mechanisms of transport through its bilayer are vital in maintaining homeostasis in the cell and the entire body. To further understand these mechanisms, which can be further described as passive and active transport, five experiments were conducted. These tests were done over simple…

There are two types of cell transport mechanisms. These types of transports are passive and active transport. The difference between active and passive is that passive does not require energy and active does require energy. The reason passive does not require energy is because it travels down a concentration gradient. On a concentration gradient molecules naturally move from high to low concentration. In active transport, molecules move from low to high concentration. There are three different types of transports for…

SYNOPSIS The 2001 film, "Osmosis Jones", focuses on the representation of the human organism and the daily conflicts a body faces in order to maintain function. The film "Osmosis Jones" is a film that tries to capture the attention of children ages eight to fourteen, by exposing the mechanisms of the human body. It is able to reveal the dangers of maintaining an unhealthy diet and some of the consequences that are associated by doing so. The film illustrates that…

Different pH level may affect the growth and development of the plants. Certain key words include: pH level, germination, acidity, osmosis and diffusion. This experiment examines the effects of different pH level of vinegar on the growth of bean plants. Materials used in this experiment consist of: water (pH 6), vinegar with the pH level of 3, 4 and 5 (each one were made before experiment), beans, soil, and pots. Eight bean plants were planted, two were watered with pH…

'The structure and significance of the plasma membrane discovered within and around all cells' The plasma membrane surrounds all eukaryotic and prokaryotic cells. Eukaryotic cells have membrane bounded organelles whereas prokaryotic cells do not. The plasma membrane forms the border between the cell cytoplasm and the environment. Its function are to permit various environments to be established inside and outside the cell. It also manages the movement of substances into and out of the cell. The cell surface membrane which…

Osmosis in the motion of water particles through a selectively permeable membrane. It happens from a region of high water concentration to a region of low water concentration. The control of water balance in animals is called osmoregulation. Osmoregulation is a homeostatic mechanism. The body fluids of a seawater fish are hypotonic (higher in water concentration) compared to the surrounding sea water - the sea water is therefore hypertonic. Due to the fact that of this they constantly lose water…

Osmosis, the movement of water across a semi-permeable membrane, plays a crucial role in cell dynamics. This phenomenon occurs when there is a concentration difference between the two sides of the membrane, causing water to move from low concentrations to high concentrations. The effects of osmosis on a cell range from turgidity and hardness due to water influx to dehydration, known as plasmolysis in plant cells, as water exits the cell. This leads to changes in mass, volume, texture, and…

Water can move through the different cells due to the difference of water potentials in the cells. If there is a higher solute concentration in the cell than outside the cell, the water will move into the cell. However, if the concentration of inside the cell is lower than the outside, water will not move into the cell. This process is called osmosis. Research question; This investigation will determine how different concentrated sugar water will affect to the mass change…

Abstract Students in Biology find it difficult to understand the concept of tonicity and osmolarity in a real time situation. In this investigation, several concentrations of sucrose were used to determine the osmolarity of a potato. It was found that the concentration of sucrose was close to 3.6 in the potato used showing that it was isotonic. Anything above caused the potato to gain weight showing that it was a hypotonic solution and anything below caused the potato to lose…

Introduction Diffusion, a fundamental process in biology, entails the movement of molecules from areas of high concentration to low concentration. This phenomenon, along with osmosis, plays a crucial role in cellular functions. Osmosis, a specialized form of diffusion, involves the movement of water molecules through semi-permeable membranes. Understanding these processes is essential for comprehending how cells maintain homeostasis and exchange nutrients and waste products with their environment. Hypothesis In this experiment, it is hypothesized that diffusion and osmosis will occur…

ACTIVITY ONE- Cell Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also, membrane thickness is…