Red onion cell lab report. Onion Cell Lab Report 2022-10-02
Red onion cell lab report Rating:
A red onion cell lab report is a written document that summarizes the results of a scientific experiment involving the examination of red onion cells. The purpose of this lab report is to describe the methods and procedures used to observe and analyze the red onion cells, as well as to present the results of the experiment and discuss their significance.
To begin the lab, a red onion was obtained and a thin slice was cut from the onion using a sharp knife. This slice was then placed on a microscope slide and covered with a coverslip to protect it from damage. The slide was then placed under a microscope and the red onion cells were observed using high magnification.
During the observation, several characteristics of the red onion cells were noted. These included the shape and size of the cells, the presence of cell walls and cell membranes, and the presence of organelles such as the cell nucleus, mitochondria, and vacuoles. The presence of these organelles was confirmed by examining their distinctive shapes and sizes under the microscope.
In addition to observing the red onion cells, several experiments were also conducted to further analyze their characteristics. One such experiment involved staining the cells with a solution of iodine, which allowed for the visualization of the cell walls and cell membranes more clearly. Another experiment involved adding a solution of sugar to the cells, which caused the cells to take up the sugar and swell, demonstrating the presence of vacuoles within the cells.
Overall, the results of the red onion cell lab report showed that red onion cells are composed of several distinct organelles, including the cell nucleus, mitochondria, and vacuoles. These organelles are responsible for carrying out the various functions necessary for the cell to survive and thrive. The cell walls and cell membranes also play important roles in protecting and maintaining the integrity of the cells.
In conclusion, the red onion cell lab report provided valuable insights into the structure and function of red onion cells. Through careful observation and experimentation, the students were able to gain a deeper understanding of the complex processes that occur within these cells. This knowledge will be useful in further studies of cell biology and will help students to better understand the fundamental processes of life.
Onion Cell Lab Report
So, you have the option of using your preferred light microscope, or whatever you have on hand. Preparation The most important step here is to adequately and properly stain the onion peel cell sample so that you can see the individual cells and the cell structure under the microscope. Onion Cell Lab Report By : Nawaf Almalki Introduction : Many things that are viewed using a microscope, particularly cells, can appear quite transparent under the microscope. Membranes usually help maintain the balance in a cell as it holds all the cellular materials. Label the graph, both axes, and provide a legend to distinguish each trial.
Also the first trail we did, we put 40ml of 0. Step 2: Place the onion on your glass slide. The type of onion will be insured by using the same onion red onion to collect data, if a different type of onion is used, this would increase chance of error while collecting data. INFORMATION TO USE IN THE LAB: All plant cells contain a cell wall, but not all the cell walls are stiff. An onion also produces other simple sugars or carbohydrates. . The concentration of the NaCl solution will be altered to determine the isotonic values, this is when the concentration of the solution and water is equal on both sides, meaning that the gradient achieved zero.
The hypertonic solution which will be used in this experiment will be Sodium Chloride NaCl. Aim: The aim of this investigation is to identify the cells within an onion skin using a light microscope. If the solution is hypotonic containing fewer solute particles than the inside of the cell , the water will move from the solution into the cell. The students had to assemble the first three slides. Cells rely on movement of particles through diffusion to carry out activities.
Some of the cell walls are very thin in some plants. It could be explained in terms of the weak interactions between the fiber added from seaweed and the protein starch matrix to encapsulate the native starch. Label this cylinder A. This is when the cytoplasm is just about to pull away from the cell wall. Dry them using a paper towel or with a piece of soft cloth.
General Biology BI131 01 The Cell Structure and function Abstract In this lab the structures of various cells were viewed through a compound microscope. Then you will pour 100 ml of vinegar into a 500 ml beaker and 100 ml of salt water in the other 500 ml beaker. Cautions and Warnings Make sure the electronic balance is set to zero, before placing the tissue on it to measure the initial mass, as the estimate will be inaccurate if this step is not followed. Clinical Implications: This experiment clearly demonstrated what happens in a blood cell if a solution that has an incorrect percentage of solutes is delivered into the blood stream. When the cell is in a hypertonic solution water will leave the cell and it may shrink or go through something called plasmolysis.
The purpose of this lab was to learn and get a better understanding of what is happening in the movement of molecules. Use the red, lowest objective lens. Molecules are what forms when atoms bond together. The one on the left is the original, in which water was in the wet mound slide. The cause of the shrinking of the cell wall is often due to the loss of water. Include any safety issues you need to be aware of. In the lab, observations were recorded to see how a 1% saline solution and a 10% saline solution affected the size of the vacuole inside the cells of the outer membrane of a red onion.
The purpose of this lab is to compare the three different types of solutions affect on the relative size of the vacuole to the cell, the outer membrane of onion red cells tunics are used to figure out the different types. Studying cell tissues from an onion peel is a great exercise in using light microscopes and learning about plant cells, since onion cells are highly visible under a microscope, especially when stained correctly. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. FAQS About Onion Cells Under Microscope What do onion cells look like? But what is cancer? All this means that chloroplasts and chlorophyll, which are needed for photosynthesis, are only present in the leaves of the onion cells, and are absent in the onion bulb. Get your paper price 124 experts online The flow of water across a permeable membrane is called osmosis, and during this process, water moves down its concentration gradient. Overall, Cytochemistry reveals the presence of specific molecules, their distribution within the cell, also its form and structure Lab Manual, Chp.
However, the cells on the slide containing a more concentrated solution have a higherconcentrationof water in the cell than outside. How do you calculate magnification on a microscope? Introduction In this experiment it will be analysed the damage alcohols can have on biological membranes. In your data table you will record the observations of what is happens to the shells while they are exposed to vinegar and the salt water every 5 minutes. It was my first time using a microscope by myself, and I loved looking at the cells and counting them during their different stages. The uniformity of onion cells are due to the existence of the cellulose, which helps the cell maintain its shape. After the water boiled, I poured itinto the bowl containing the cool water and gelatin powder. LAB: ONION CELLS OBJECTIVE: To observe the structure of a plant cell.
Onion epidermal cells appear as a single thin layer and look highly organized and structured in terms of shape and size. Regarding to response surface plot, the addition of hydrocolloid at 2 g concentration had lower cooking loss than 1 g concentration Figure 1C which was similar to the result of Lü et al. Membranes are made up of lipids and proteins. Onions are also made up of several layers, with a membrane or thin skin separating each layer. As with most, if not all, plant cells, using a simple low power light microscope is sufficient to be able to see most of the minute details of each individual cell part.