My group formed a hypothesis that the farther the pH was from neutral, or 7, the less the color of the solution would change. Figure 2A: Absorbance at 600 nm of solutions of different pH values over 7 minute intervals. Figure 2A shows the change in absorbance at 600 nm as we changed the pH of the solutions from acidic, to neutral for our control, to basic. We also measured the absorbances at 0 minutes, 7 minutes and 14 minutes.
The unit we just concluded is called Bees. Bees was all about finding the area of shapes, using trigonometric functions and/or the Pythagorean theorem to find the side length(s) of a triangle, using trigonometric inverses to find the angles of a triangle, using triangles to see what polygon has the largest area when the perimeter of the polygons was 300 feet, and finding the volume, surface area, and lateral surface area of three dimensional prisms. A polygon is a two dimensional figure with at least three straight sides. Perimeter is the distance around a polygon. To find the perimeter of a shape, you need to add the lengths of all the sides of the shape.
Plant height and leaf area were compared in two rapid-cycling Brassica rapa genotypes for 14 days of growth. The dwarf mutant, rosette which is relatively smaller than its counterpart the standard Brassica rapa were grown in a lab and observed for morphological difference. Difference of internode height was found to be because of fewer and smaller cells of the rosette dwarf variant. The average rosette dwarf epidermal cell was found to be about 65% of the size of an average standard epidermal cell within an internode. Difference in leaf size was found to be related to smaller epidermal cells within the rosette dwarf variant.
Because carbon dioxide is absorbed by the plant during photosynthesis less carbon dioxide present in the chamber is a sign that photosynthesis is working. The four lights used for this experiment range across the light spectrum on both sides in order to test a wider variety of wavelengths. All lights will be placed directly on the spinach leaf at the same distance so as not to give any spinach leaf a different light intensity, which could affect the data. This experiment will be able to show which light, ranging across the light spectrum, will allow the Spinach to perform photosynthesis more efficiently.
Introduction: The experiment that was done will show that 75 percent soil, and 25 percent soil growth, 100 percent soil the control group will allow the Brassica rapa to grow to a larger extent than the others. While the 100 percent sand, the 50 percent sand and 50 percent soil group will either not grow or not grow as much. The reason that this will occur is that the soil is full of nutrients which will allow the 100 percent to grow more with the ones with the soil. The null hypothesis is that there will be no change in plant growth of soil compared to sand.
The importance of the experiment is to determine the effects temperature has on beet cell membranes, and to understand why certain cells are best suited for certain environments or in this case certain temperatures. Cell membranes play a vital role in selectively allowing substances such as proteins, nutrients, and other chemicals into and out of the cell. The cell membrane is also a line of defense against harmful chemicals and other agents that try to enter the cell. We hypothesize that increasing the temperature will increase the fluidity of the membrane thus making it less permeable. When the temperature of the cell increases it will cause the phospholipids that make up the plasma membrane to move apart from one another and become more
Scalloped Potatoes Note: This high-calorie recipe is especially for kids with cystic fibrosis (CF), who need to consume additional calories to meet their nutritional needs. This recipe is a high-calorie, calcium-dense twist on a tasty favourite. Prep time: 30 minutes Ingredients: •4.9-oz. box of scalloped potato mix •1-2/3 c. boiling water •1 c. heavy cream •3 tbsp. butter •1 c. cheddar cheese Utensils: •oven (you'll need help from your adult assistant) •1½-quart casserole dish •mixing spoon Directions: 1.Heat oven to 450°F (232°C).
Chromatography of Spinach Formal Discussion This lab involved the extraction of pigments from spinach leaves which were then analyzed using thin layer chromatography. The first step of this process was to grind up the leaves in order to extract the pigments. Hexanes facilitated this process and afterwards, the solution was dried over sodium sulfate to remove water.
The 5% concentration gave off a very light shade of red from the beet slice, almost a pinkish color, which gave it a low color intensity score in the graph, (a score of 2/10). This means that the low concentration of acetone was just barely able to break down and stress some of the beet tissue and the phospholipid layer and solute the tonoplast. Although it was a very distinct color, the 5% proved that it was effective enough to do its job. The 15% acetone gave more of a darker color than the 5% and had a higher color intensity, (4/10). However, the oblique was still light as it did not give much of a darker color than the 5% concentration did, yet it was able to break down the beet tissue much more effectively.
In the future, as I do this experiment once again I will make sure to measure the beets more accurately, also add a range of temperature to show more
Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 5 0.155 0.111 0.122 0.153 0.136 30 0.232 0.191 0.124 0.189 0.212 45 0.144 0.283 0.133 0.152 0.287 60 0.291 0.241 0.245 0.278 0.265 75 0.426 0.309 0.333 0.478 0.384 Qualitative Data During the experiment I realized that as the temperature of water increased the color of the beetroot intensified. This is because the beetroot membranes are damaged, making the red pigment leak out into the surrounding environment. Whereas for lower temperatures I had realized the color of
The sample that has been used is silver beet plants. It is not the same type of plant in my research therefore the results could differ. This source did help me to narrow down my research and increase my knowledge on the topic as it gave me an idea of what the conclusion could be in my experiment as I will also be using “grey water” (in my experiment it will be water that is polluted with detergents.) The source also gave me a clear indication on how to structure my experiment and what quantities must be used.
Title: How Different Colored Lights Affect the Growth of Plants Introduction: This experiment had multiple objectives. The first objective was to establish what colors of the light spectrum photosynthesis uses. The second objective was to determine which colors in the light spectrum help a plant to grow faster, and which slow the growth of a plant down.
The sunflower seed is the seed of the sunflower (Helianthus annuus). The methanol extract of seeds of Helianthus annuus were screened for analgesic activity in mice model to systematically explore the medicinal values of the plant. Acetic acid induced writhing and hot plate methods were used to confirm the central and peripheral analgesic action. The extract at dose 100mg/kg and 200mg/kg showed attenuated writhing inhibition at 50.35% and 57.85% in case of acetic acid-induced writhing test which showed significant analgesic activity (p< 0.05). In the hot plate method increase (p < 0.05) of latency period was also observed in comparison to standard aspirin.
2. Materials and methods 2.1.Yeast cells and culture growth conditions Yeast cells S. cerevisiae VIN 13 strain (commercial dry yeast) used for laboratory experiments were provided by Anchor Yeast (South Africa). Yeast cells were grown in a defined medium containing (per liter of deionized water): 100 g D-glucose, 1 g K2HPO4, 1 g K2H2PO4, 0.2 g ZnSO4, 0.2 g MgSO4, 2 g yeast extract and 2 g NH4SO4. All the media components were purchased from the Sigma Chemical Company (St Louis, MO, USA). 2.2.Yeast cell preconditioning and inoculum preparation 1 g dry weight of yeast was resuspended in 100 mL of deionized water in an Erlenmeyer flask of 250 mL volume, at 30–35°C, for 30 min with NaCl 6% w/v. Inoculum for experimental fermentations was prepared
