To resolve the plants from reproducing we cut off the pods that the plants had been produced. Many plants were either close in growth or far apart in growth. That is when we started to develop outliers in our experiment which separated us from other groups’ data. We did not have any outliers in our experiment, our final measurement for our plants were very close in…
By using these concepts and techniques, we created a dilution curve to display and understand our data. Procedure1 Materials The materials used in this experiment are whole grain cereal, Sodium Acetate, water, hydrochloric acid, 2-2 Dipyridyl solution, Hydroxylamine-HCl, and D.I. water.…
The standard deviation of mass lost for my personal data was approximately 25%. This shows me that there was a low amount of errors made in measurements. The uncertainty in the class is high which opposes my percentage of uncertainty. Some major sources of determinate error are incorrectly computing the recorded data into Excel.…
Analyzing Osmosis in Gummy Bears Stephania Turyk and Anastasija Racic March 2016 Pre Lab Questions Why is it so important not to eat or drink anything in the lab? It is important not to eat or drink in the lab because the lab may be full of many contaminations that may enter your food or drink causing you to be very ill. Describe the direction of the flow of water when plant cells are placed in a hypertonic solution.…
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…
In this lab my group and I learned about what type of test to conduct when determining a pollution source. I predicted that the Whitmore Strawberry Farm was producing the pollution that was causing algal blooms to form in the lake. The farm used a combination of organic and commercial inorganic fertilizers, which could have been the pollutant. The Whitmore Strawberry Farm was not the source of the pollution, the source was the Emerald Estates.…
Each lab table was responsible for growing a pea plant. Nine pea plants were planted in total. The pea plants were separated into three groups. The first group was without any auxin, the second group had 500 ppm of auxin, and the last group had 5,000 ppm of auxin. The growth of the pea plants were recorded and ranked using a Wilcoxon test to determine which peas showed significant growth.…
The control groups are the amount of water(30ml), the type of soil(Miracle Grow), and the amount of lighting. To be able to conduct this experiment we had to plant a seed. The plant was watered and got lighting too. The third plant didn't start to grow until the seventh day, and the second…
The control, 0 percent, germinated only around 62 percent of seeds. The 0.045 percent germinated ¾ of its seeds. The 0.09 percent group grew 62.5 percent of its seeds. The 0.18 percent grew 87.5 percent of its seeds. The 0.75 percent group grew half of its seeds.…
A 250 ml beaker was filled with 150 ml of a 10% sucrose solution. Then a 1.4 liter Tupperware container was filled with 500 ml of a 1% sucrose solution. Bag A was placed in the 250 ml beaker, and B, C, and D were placed in the Tupperware container. The initial times were recorded for each bag. Each bag was removed from its respective container and weighed every 15 minutes over the span of one hour.…
The purpose of this experiment was to see how rock salt affected a grass cube’s growth rate when it was added to water that was given to the grass. In our procedure we would dissolve the rock salt with water in a beaker and give it to the grass using a liquid dropper. Our dependent variable was the grass height and our independent variable was the rock salt. We had constants, such as the water container the grass was left in and where all the grass cubes were placed after the procedure. We also had a control group that didn’t receive any additional items, just water.…
The carrot you only need a small piece of while the grapes you will need two to three and a handful of spinach leaves. Next you will need a triple beam balance to measure the mass of the items, a knife to cut the items and a large paper towel. Once you have all the materials you can begin the experiment. First make a table five by four table to record your data. Have four columns for the mass on the first day, mass on the third day, the difference between the two and the percentage of water found.…
The purpose of this EEI is to create and analyse an experiment that relates to and supports the theory of osmosis in biological cells. Cells are the biological building block for all life; all living organisms have cells also. Cells provide structure, absorb nutrients from food and convert those nutrients into energy so that the cell can carry out specialized functions. There are two main categories with most organisms and their cells; prokaryotes and eukaryotes. The distinctive difference between prokaryotes and eukaryotes is that eukaryotic cells contain membrane-bound organelles, such as the nucleus, while as prokaryotic cells do not.…
This occurs because according to osmosis, water moves down its concentration gradient from a low solute concentration to a solution with a high solute concentration. In addition, an increase in the mass of the potatoes occurs because the highly concentrated solutions were hypertonic. Potatoes with the greater increase tend to be the sweet potatoes because the potatoes already have sucrose embedded in the substance. When placed in a solution with high sucrose content, the amount of sucrose in the sweet potatoes increases because the solutes enters a cell with higher solute potential than that of the surrounding environment. When the net osmosis rate is zero the solution is isotonic because equal amounts of solute is present in the cell and the surrounding environment causing no net movement.…
Purpose: To test the effect of inorganic and organic catalyst concentration and surface area on the reaction rate. Introduction: In this experiment the experimenters will seek to determine what factors determine the rate of a reaction with a catalyst. A catalyst is a molecule that starts a chemical reaction, but it is not part of the reaction it is causing.…