Bio By filling dialysis tubing with different concentrations of. When viewed under the microscope, the. Biology High School Goal: To observe the effects of high and low concentration of a potato.
The options are to create 4, 5 or 6 replicates. Each of the options has different strengths and weaknesses.
The biggest factors are about the amount of potato cubes to be used per investigation and how many potatoes per test tube. If the experimenter only cut a few pieces of potato per investigation, option 1 it lacks in the accuracy of results.
On the other hand, if the experimenter cut many potato cubes, option 3 it would take a long time and thus, there would be a slight difference in the first and last potato cube due to the uncontrollable variables, such as moisture and temperature changes, affecting the primarily cut potatoes for a longer period of time than the potato cubes cut just before they are placed into the test tubes.
So, option 2 which contains a reasonable amount of 5 potato cubes and accurate results would be the best option. But for all the experiments, if there is a short time limit, approximately 30 minutes or less, it would be wise to put 5 potato cubes per test tube because it will be faster.
But there is also an upside to this choice. Not only will it be time efficient, all the potatoes will be in the exact same volume and concentration of salt water. The independent variable is the salinity concentrations in the water.
Title: Potato Osmosis Abstract: In this experiment was designed to study the effect of a concentrated solution applied to white and sweet potatoes. The solution’s impact among the potatoes were to be either hypertonic, hypotonic, or isotonic. The potatoes were first cut . Ap Biology Egg Osmosis Lab Essay Words | 3 Pages. AP Biology August 23, Egg Osmosis Lab Definition of osmosis: The diffusion of water across a selectively permeable membrane from high to low concentrations Hypothesis: If I place an egg in vinegar, then the outer layer of the egg is going to become slimy and look like rubber. Transcript of Osmosis Lab. Introduction Materials and Methods Results An experiment to determine the water potential of Solanum tuberosum What is the water potential of cells from the interior of a potato? Osmosis is the spontaneous movement of water through a semipermeable membrane from an area of high water concentration to an area of.
This states that the control experiment is no salt, just a 1cm x 1cm x 1cm potato cube in 15ml of plain water for 20 hours. Keep all variables the same except for the independent. If it was too less, the whole potato may not be fully covered by the salt water and if the volume of water is too large, when the potato cube is put into the test tube, it may cause the water to spill.
Thus, if a test tube holds 25ml, 15ml would be an appropriate volume for this experiment.
The time the potato cubes are in the test tubes There should be 20 hours from the start until the end of the experiment for all the investigations. This may be enough time for the osmosis process to start. Size of the test tubes There should be 5 test tubes if there is a short time limit and 25 test tubes if there is no time limitall the same size in order to achieve accurate results from the experiment.
Each test tube should be able to hold a 1cm x 1cm x 1cm potato cube and 15ml of salt concentrated solution. Place This experiment should be conducted indoors to reduce the number of uncontrolled variables.
If this experiment was conducted outdoors, it would increase the risk of bugs, weather danger and the temperature change would be wider. As a consequence the results would not be as accurate as conducting the experiment indoors.
Type of potato The best method to control the type of the potato is to use just one potato. Size of potato cubes Try and equally cut 1cm x 1cm x 1cm potato cubes. Collect the all the apparatuses to start the experiment.
Gather everything on the list above. Once all the apparatuses are ready for use, stab the corer into the potato several times.Title: Potato Osmosis Abstract: In this experiment was designed to study the effect of a concentrated solution applied to white and sweet potatoes.
The solution’s impact among the potatoes were to be either hypertonic, hypotonic, or isotonic. Osmosis Potato Lab Report Biology 4u Essay Words | 9 Pages. Introduction The movement of water molecules across a semi-permeable membrane is the process of osmosis.
Osmosis Experiment Essay Sample. 1. Design. Defining the problem.
Research Question. Have you ever accidentally cooked a solanum tuberosum (potato) in . | The effect of salinity on osmosis of solanum tuberosum L. (potatoes)| Biology HL Internal Assessment – Year 10| | Teresa Nguyen| | Table of Contents 1 DESIGN2 1.
1 Defining the problem2 FOCUS QUESTION2 HYPOTHESIS2 BACKGROUND INFORMATION2 INVESTIGATION VARIABLES3 1. The Effect of Osmosis on Potato Cells Essay. In this experiment I am going to investigate the effect of varying concentration of a differing glucose solution on the amount of osmotic activity, between the solution and a potato tuber of a given size.
Essay Writing Guide. Biology Internal Assessment IB Biology- Internal Assessment Lab Report * Osmosis experiment- Solanum tuberosum (Potato) Research Question: What is the effect of different concentration of salt solution on the rate of osmosis in solanum tuberosum (potato)?
Hypothesis: The potato will lose weight and become shrank when.