This may have occurred in part because the onion itself was already dried out and dehydrated, or while the onion was being looked at through the microscope, the heat from it may have caused the cells to loose water.
For a plant cell, the ideal solution is a hypotonic solution because the cell takes in water increasing turgor pressure which keeps the cells tightly packed and keep their shape.
This can be stated because the cores took in water while they were emerged in the distilled water.
Water potential was a key element in each part of the experiment. Lab 1C provided information that helps to conclude that potatoes do contain sucrose molecules. Since water moves areas of high water potential to areas of low water potential, reactions took place in each part resulting in different conclusions being derived from them.
In plant and animal cells, loss or gain of water can have different effects. During the experiment conducted in Lab 1A, the results and data collected make it possible to conclude that glucose and Iodine Potassium Iodide can pass through a selectively permeable membrane and will if the concentrations on either side are not equal.
The solute potential is equal to about a 0.
In an isotonic solution, the plant cell does not have enough turgor pressure to keep is shape. During Lab 1D calculations were made and questions were answered to help give a better understanding of water and solute potential.
Lab 1B — In this lab experiment, the data seems to be compliant with the data collected by the other lab groups, so no human error was thought to have happened. It is thought that the onion cells would have plasmolyzed due to the addition of NaCl to the cells.
Lab 1C — There was some discrepancy in this experiment in the 1. Lab 1E — In part 1E, after adding the NaCl solution to the onion cells, the cells should have reduced in size, but no reaction took place.
If the solution is hypertonic, the cell will shrivel from lack of water intake. This shows how the onion cells had high water potential and moved to the area outside the cell with lower water potential.
Lab 1E Questions 1 After preparing a wet mount slide, I have observed the onion cells under magnification and they appear to be small, empty boxes pushed closely together. Lab 1A — The data collected in this lab experiment did not seem to contain any inconsistencies, so therefore no human error is detected.
In a plant cell, it is ideal to have an isotonic solution.Lab 6 Experiment 2: Concentration Gradients and Membrane Permeability Review the Lab 6 Introduction material.
Follow the instructions outlined in Lab 6 Experiment 2 and complete the tables below and answer the questions associated with this experiment. Read the instructions carefully before beginning!85%(52).
lab 6: Diffusion Experiment 2: Concentration gradients and membrane permeability We will dialyze a solution of glucose and starch to observe: • The directional movement of glucose and starch.
• The effect of a selectively permeable membrane. In this lab, we will be using an indicator to test for the presence of starch and glucose. An indicator is a. Notice that the starch molecules are too large to pass through the pores in the membrane.
The iodine molecules move across the membrane in both directions, but their net movement is from the bag, where their concentration is higher, into the beaker, where their concentration is lower. Home / Escience Labs / eScience Labs Difusion and Osmosis Experiments 1 eScience Labs Difusion and Osmosis Experiments 1 – 4.
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To get your Assignments and Papers, just add to cart, submit payments and download your papers instantly. Experiment 2: Diffusion – Concentration Gradients. Search Results for 'answer to experiment 2 osmosis direction and concentration gradients data tables and post lab assessment table 3 sucrose concentration vs tubing permeability'.
Lab 1 Diffusion Osmosis Experiment 1 2 Concentration Gradients And Membrane Permeability. Diffusion and Osmosis Experiment with a Shell-Less Egg After Three days of Testing Methods with Water and Corn Syrup Lisa July 1, Purpose To use the properties of diffusion and osmosis to see the effects of either corn syrup or water on a .Download