Half of the measuring cylinders were filled with 60oc water, and the other half with 25oc water. Tests of the water were carried out with an iodine test and diet stix to detect any starch that had been broken down and passed through the tubing. The results from the tests show that there were experimental errors, and the experiment should be carried out again to…
Title: Alexandra Whitaker, Ms.Dayton, 12/23/16, 2.03 lab permeability Objective(s): The main purpose is to find out if plastic bags are permeable to starch and, or, iodine. Also, to find out wither potatoes are hypotonic, hypertonic, or isotonic by testing the different amounts of sucrose solutions Introduction: The necessary background information needed for this lab is the definition of osmosis, diffusion, active transports, passive transports, permeability, concentration, tonicity, and to now the scientific concepts of hypotonic, isotonic, and hypertonic. Hypothesis: For part 1 my hypothesis is: That the starch will diffuse across the plastic bag and react with the iodine and will have a color change to the water to imply the reaction…
This experiment was started with three trays, each of the trays having either basic, neutral, or acidic soil in it. Once there was a hole in the soil of each tray roughly 1cm deep and 2.5cm apart two Brassica seeds were planted in the hole. Next making sure to keep track of which plants were acidic, basic, and neutral thee trays were labeled and note was taken on which tray had which soil on a separate lab paper. After the Brassica seeds were planted they then were placed under constant light for two weeks. two weeks later, the plants had begun to sprout.…
These labels respectively correspond to the hormone treatment that each seed will receive. In both planters, fill the five compartments halfway with regular soil. Obtain ten corn seeds and place one seed in the middle of the soil in each of the ten compartments. Continue covering the corn seed with regular soil and fill the compartments completely,…
The last three cups were filled with plain tap water. Next, measure all of the plants with a ruler. Place all of the measurements and recorded them onto a table. Around the same time measure the flowers and make observations on how they changed from day to day. Everyday for a week complete the same procedure from day…
5 Table of contents….. 6 Experimental procedure….. 7 Work cited…..8 Experimental procedure Experiment: First off I wanted to see how I could compare bread without water to bread with water so I got two pieces of bread and took a bottle of regular water and wet one of them down then I put them in a ziploc bag for a little over a week.…
We started out with twenty radish seeds, we then split the twenty radish seeds into two groups of ten. One group was to be our control, one group was to be our test subject. We then took our two petri dishes and lined the bottoms with paper towels. Then we soaked paper towels in one of the petri dishes with tap water. Within itself the other paper towels in the other petri dish with our acid rain solution with a pH of three.…
Discussion The data obtained from the spinach disks experiment was inconclusive. Sample one had 50mL of distilled water at a temperature of 22°C, it took the spinach disks an average time of 17:06 minutes before reaching the top. This occurred because the enzymes in the spinach disks were functioning around an optimum temperature for photosynthesis and the production of oxygen. Sample two had 50mL of distilled water at a temperature of 10°C, the spinach disks had no movement at all. Sample three had 50mL of distilled water at a temperature of 60°C, the spinach disks did not fully rise to the top of the water.…
The data supported the hypothesis due to the fact that the rate of respiration was lower when the peas were put under colder temperatures of water. The respiration rate also increased when the temperature of the peas was higher when they were put under warmer temperatures of water. Throughout cellular respiration, the works of different enzymes were the ones in charged for these changes. Enzymes have a special way on how they work, when enzymes have a temperature that is higher than normal, the reaction will increase and they will work faster, but when the temperature of the enzyme is slower than normal, they will stop working as fast as they normally do. Something important is that they work really fast when they are putted under high temperatures,…
It is expected that if the concentration of sucrose increases from 0.0 M, 0.2 M, 0.4 M, 0.6 M and 0.8 M (±0.01 g) in a 40 (±0.5) mL sucrose solution, then the average percent change in mass in Solanum tuberosum core will decrease. This is because if the Solanum tuberosum cores are placed in a hypotonic sucrose solution, which is described as having lower osmolarity, than the percent change in mass of the Solanum tuberosum core will increase due to the fact that water molecules will be moving from an area of lower solute concentration to an area of higher solute concentration inside the Solanum tuberosum core. This will occur in a sucrose concentration of 0.0 M (±0.01 g) as no solute will be present in the water, however, some sucrose will already be present in the Solanum tuberosum core, resulting in water molecules to move into the Solanum tuberosum core, which will increase the percent change in mass.…
The control variables were water (30 mL at a time), soil (Miracle Grow), and amounts of lighting (11 hours each day). The experimental group was the microwaved seeds (cell #2 and cell #3). Two of the seeds were microwaved and one of them was not. Each plant received the same amount of water and lighting. The average height of plant cell #1 was 3.014, plant cell #2 was 0.857, and plant cell…
Succeeding that, we put the lids of the petri dishes back on and cut around six inches of parafilm around all six of the petri dishes. We used parafilm in order to retain the water. Lastly, we placed all three of the trials under a florescent light until further data is collected. The seeds were under the light for a total of thirty-one hours. We collected data at the start of the trials, after seven to eight hours, after twenty-four hours, after twenty-seven hours, and finally, after thirty-one…
Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…
An experiment was taken that used corn and if the depth of the planting affected how many bushels grew. Seeds were planted ½ inch below, 1 inch below, 2 inches, and 3 inches. According to the Demonstrative Report, 2008, corn that was planted 2-3 inches below the surface had the best results and seeds just ½ inch below had the worst. This is a little different from the experiment being tested today. The experiment being tested is when you plant Alaskan Pea seeds deeper will they grow the same height just as much as the seeds just below the surface of the soil.…
Control Variables: Amount of dirt, time in light, type of bean, type of soil, source of the light, amount of liquid, room temperature, and time watered. Dependent Variables: Height of plant, # of leaves on the plant, posture of the stem. Independent Variable: Creek water and miracle grow + water Procedure: Experimental Group: Plants watered with creek water and miracle grow + water Control Group: Plant watered with tap water Grab three cups and three lima bean seeds Label one cup tap water, one creek water, and one miracle grow + water Fill the cups up with the same potting soil, half full Bury the seeds under the dirt, about an inch down Water the seeds with 25 milliliters of the designated liquid in a graduated cylinder For the miracle grow, fill the graduated cylinder with 25 milliliters of water, then put in a pinch of fertilizer, and mix Measure all the plants height (with a ruler), check the posture of the stem, and number of leaves Record your data into a data table Put your plants back under the…