Comparing Plant Organs And Their Nutrients

When the final readings were recorded, the stoppers were removed. The Mung beans seeds were carefully removed as well and weighed on the scale. All data from the 5-minute interval at 40 minutes total, were recorded. This included both treatments. The means of the data were taken down and plotted into a line graph. The slope of the lines were calculated and presented in figure 1.

A cell, the building block of all living organisms, is composed of four fundamental biomolecules: proteins, carbohydrates, sugars and lipids. Proteins provide a vast amount of functions cells such as they serve as enzymes, provide structural support to cells, and act as antibodies. Reagents are used to spark a chemical reaction. The reagent used to detect protein traces in a substance is Biuret’s. Biuret’s will turn purple if proteins are present and blue if they are none. Biuret’s copper particles, have a charge of +2, are diminished to a charge of +1 when peptide bonds, which are in proteins, are present, creating the color change. Polysaccharides, which are carbohydrates, are most notably known to provide energy to the body, but they also help in breaking down fatty acids. Iodine is the reagent used to determine whether a substance has starch in it. The iodine/starch complex has energy levels that are only for retaining unmistakable light, giving the complex its extraordinarily dark black-blue shade. If there is no starch found, iodine will remain its natural yellowish-brownish color, but if starch is present, iodine will turn blue-black. Monosaccharides, which are sugars, like polysaccharides, provide the body with energy. To detect monosaccharides, the reagent, Benedict’s, is used. Benedict’s reagent is added to a test tube, then it is placed in

The ends were trimmed of each core to 3 centimeters in length. The cores were blotted dry and weighed each to the nearest one hundredth of a gram and results were recorded. 20 ml of each sucrose solution were poured in the labeled, 50 ml beakers (0.0m-0.8). Placed one white potato and one sweet potato core in each beaker. The potato cores were left in sucrose solution for one hour.

b) Benedict test the solution color will change from blue to pink/orange red, indicating simple sugars are present. Lugols test the solution color will change from yellowish brown to dark purple, indicating starch and polysaccharides are present. Sudan iV test the lipid content will turn into red, indicating lipids are

The purpose of this experiment is to exemplify how differences in molecular weight allow separation of polymers from their monomers. Methods of dialysis and gel filtration chromatography will be used to separate a glucose monomer from a starch polymer. Colorimetric glucose oxidase assay will be used to monitor the presence of glucose and a colorimetric iodine assay will be used to monitor the presence of starch in prepared solutions after separation

Cellular respiration is going on in every cell in plants. It is interesting to know there is several of factors that affects cell respiration in plants for example ph. levels, temperature, oxygen, sugars. Germinating seeds carry out cellular respiration processes in much the same way as plant and animal cells do (Jeanty). Plant seeds respiration requires enough to maintain food or nutrients. The experiment that was done is testing the rates cellular respiration of germinating lentils that were soaked in different liquids which are water, juice, cola, Gatorade and milk. The hypothesis one is the highest rate of respiration is going to be the germinating lentils in water. The second highest rate of respiration is juice. The third is Gatorade. The fourth highest is milk. The lowest rate of respiration is going to be with the germinating lentils in cola.

This experiment was conducted to observe the effect of a certain amount of sucrose in a solution on white potato cylinders. About five or six pieces of potato went into six different solutions that were in increments of 2 m and were labeled by color. The point of this experiment was to see which solutions were hypertonic, hypotonic, or isotonic to a piece of potato.

Abstract: The purpose of this experiment was to identify the internal concentration of potato cells when soaked in solutions with different sucrose concentrations. During this experiment, potato tuber segments were soaked in solutions containing 0 M, 0.1 M, 0.2 M, 0.3 M, 0.4 M, and 0.5 M of sucrose for one hour. After the allotted time, the potato segments that were soaked in the 0.5 M solution (the highest concentration) decreased in mass, and the segments soaked in the 0 M solution (the lowest concentration) increased in mass. Therefore, the alternative hypothesis was supported because the concentration of sucrose in the solution affected the percent change in mass of the potato segments.

For the second exercise, we had to repeat every step but, instead of using glucose, albumin solution or Sudan IV, we used white beans. With this exercise we had to make a Hypothesis. We believed that the white bean would have tested positive because it is a bean and it falls in the organic food category. After following each step, we came to the conclusion that two of them tested negative, and only one positive, it being the Biuret Solution. Benedict’s solution took the longest to show results but, it resulted in being negative.

First, we collected the materials that were needed: 3 beakers, 2 clips, glucose test strips, cooked starch, amylase, and iodine. Then we put 4 pipettes of cooked starch in the small beaker. We then mixed the starch wit h4 pipettes of amylase. The starch will be the leaf; the amylase will be the digestive enzyme. The small beaker represents the head and crop. We then put 4 pipettes of the “macerated” solution from the crop to the soaked dialysis tubing. We filled the large beaker two-thirds full of water and put 4 drops of Lugol’s to the beaker. We then put the dialysis tubing into the large beaker. We recorded data

In the lab that was conducted in class, the question was whether or not the Jicama cores’ mass would change in size when placed into different sucrose solutions overnight. The hypothesis was if you place Jicama cores into different cups containing a lower amount of sucrose concentration and a higher amount of water concentration, then the cell’s mass would change. It was predicted that the cells’ mass would decrease due to less water transferring through the plasma membrane, and this is due to a lower water concentration being inside the solution than inside the core. Tests were taken to see which sucrose solutions caused the mass to decrease and which solutions cause the mass to increase. There was less water concentration when the sucrose

Abstract. The purpose of this lab was so we could see how water potential works. We also saw how water requires certain characteristics to be able to be taken up by plant tissue. The results suggest that a higher sucrose concentration in the water results in a lower weight of the potato tissue. This is important because plants need to be able to take up the water that is provided to them.

During the experiment, the aim was that students will be able to learn and practise the biological/scientific skills essential to investigate whether chlorophyll, light and carbon dioxide is necessary for the production of starch. In this experiment, the students predicted that chlorophyll, carbon dioxide and light are needed to be present in a leaf to produce starch successfully.

As we can see in Figure’s 1.2 and 1.3, when there was no sucrose solution, the potato increased in weight. This is due to the fact that the sucrose solution was hypertonic in comparison to the potato slice. Through osmosis, the solution moved along the concentration gradient and into the potato slice making it hypotonic. When there were higher concentrations of sucrose solution, the potato decreased in weight. This is due to the fact that the potato was hypertonic in comparison to the potato. Through osmosis, sucrose from the potato moved along the concentration gradient out and into

Meaning the perfect balance between light/ dark and day/ night is needed in plants to ensure healthy growth. Other factors affecting the process of photosynthesis in a plant need to be taken into consideration as well. The plant needs to have the right water available, the right temperature conditions and the right about of carbon dioxide present to ensure the correct results. To improve this experiment I would have used a potted plant to ensure my plant wouldn’t die during the movement of the stem into the water as air bubbles could be made and the plant would die. I would leave my plant for more than 48 hours to ensure the plant is properly de-starched. I would do the experiment on two or more leaves so I would be able to compare results at the end of my second starch test to ensure no human error occurred during the experiment. In conclusion the results have shown that sunlight is a necessity for the process of photosynthesis to occur in a plant, proving my hypothesis that light is a necessity for the process of photosynthesis to occur in a plant to be true.