Potato Digest Lab Report

After 48 hours, remove each set of three cores from their containers. dry them with a paper towel to remove excess water. find mass of all 5 potato cores, record the mass in the data table.

Procedure: Variables: Controlled- water and size of potatoes. Manipulated variables- potatoes growth based on contents of solution.

The process of starch digestion begins in the mouth until reaching the small intestine. For starch digestion to occur there are various components that are needed such as the enzyme amylase and the acidic environment of the stomach. Therefore, I hypothesize that test tube #3 will digest the starch because it has both the amylase and HCL (acid in stomach).

Overall the mass of the potato slice for the groups went down during the experiment. The ranges of weight change warried from around 0.2 to 0.3 grams

Setup the experiment by placing the slice of potato in the chamber labeled either 2 and the

Though the theory following the hypothesis is correct and the experiment was carried out with as much attention as possible in a high school laboratory, the results obtained were still indicative of a few errors and did not support the predicted hypothesis. From the results obtained it can be concluded that as the concentration of sucrose increases the average percentage change in mass decreases. This is because the salt concentration inside the potato cubes of 10%, 15% and 20% concentration is less that in the salt concentration on the sucrose solution, thus the three cubes submerged in the 10% - 20% concentrated solution lost mass (hypertonic). However the cube submerged

The hypothesis for this experiment was that at 0m and at .2m the potato core was going to swell making the surroundings it was in hypotonic. For .4m it was stated that the potato core would stay the same, making the surroundings it was in isotonic. For that last three solutions, .6m, .8m, and 1m, it was thought that they would shrink, so that would mean that that the environment that they were placed in was hypertonic. Although these

Digestion starts in the mouth. Chewing mechanically breaks down the food with saliva. Saliva moistens the food and is an essential enzyme for the digestion of starch. Saliva contains ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine. About 10-15 seconds after chewing has begun, the food bolus passes through the pharynx and in the oesophagus. When you swallow, the epiglottis closes to prevent the food from entering the respiratory system. The soft palate closes to prevent food from entering the nasal cavity.

In my experiment I will have a test tube with a potato chip in. The

The following experiment was conducted to investigate the effect of concentration on a potato core. The experiment was done see whether or not the concentration in the NaCl solution would effect the mass of a piece of potato core, the experiment briefly showed that each concentration of NaCl decreased the mass of the piece of potato.

The route of the passage of food through the entire digestive tract. Food first enters the body by the mouth and is broken down into small pieces by the teeth as we chew. As we swallow the food goes down the esophagus and enters the stomach. In the stomach food is mixed with digestive enzymes, and then is pushed down to the small intestine. After the nutrients is absorb through the intestine walls, muscles push the waste into the large intestine. There waste is changed into stool then moves to the rectum until it pushes out of the body during a bowel movement.

The purpose of this lab was to understand how different solutions played a role in the digestion protein. By looking at different variables, such as temperature, and pH we’re capable of understanding just how certain substances functioned and when they didn’t. The data for all labs are clear and concise and give a clear understanding of what solutions work best. All three labs were placed in a warm water bath set at 37’C to stimulate the reaction as if it were taking place within the human body. This gives us a more accurate reading on how they would react at that set temperature. We concluded why certain tubes changed to the color they did and further explained it. This lab focuses primarily on two crucial

In this lab we will be doing an experiment to find the isotonic point of potato cells by placing potato cores in solutes with varied and measured concentrations of urea. Other solutes will be tested by other groups following the same procedure. We will track the change in weight by removing the cores and weighing them at timed intervals.

The digestive process happens when food or anything ingested passes through the gastrointestinal tract. The typical route of the consumed food is the mouth, to the esophagus, to the stomach, next to the small intestine then lastly to the large

Salt concentrations of 0%, 0.9%, 5%, 10%, and 15% were prepared before the experiment. In the experiment, the independent variables is the salt concentration and the dependent variable is the weight of the potatoes. These different solutions are used to indicate