Three test tubes where number 1-3, the first and second test tubes (#1,#2) where mark at 1cm and 5cm from the bottom of the test tube while test tube #3 was mark at 3cm and 7cm. Test tube #1 was filled up to the 1cm mark with distilled water and to 5cm with Hydrogen peroxide. The substance was swirl for 30 seconds and the height of the bubbles column where recorded. Test tube #2 was fill up to the 1cm mark with catalase and to the 5cm mark with hydrogen peroxide. The substance was swirl for 30 second and the height of the bubbles column where recorded.…
Abstract: Amylase in the body is used to break down polysaccharides into monosaccharides. The monosaccharides are simple sugars that are used to give the body energy. This effect was investigated in an experiment designed to show the breaking down of starch solution. A water bath was used to heat water up to 60oc. Pieces of dialysis tubing were wet and had starch solution put inside.…
The effects of caffeine on Daphnia magna Lee Phan Lab Section: P0501 1000587723 1. Materials and Methods: Preparation: Clean 3-well specimen chambers were kept in ice and a cooling chamber was then prepared to be put under the microscope, by filling it with ice and a small volume of water. This was done to ensure the temperature would remain around 15 degrees Celcius, which could keep Daphnia magna efficiently cool.…
Bed bugs have similar engorgement characterizes as many other bugs when it comes to the sodium solution concentrations. When offered only water versus when a solution that contained phosphate-buffered saline (PBS), the later was what was found to be the situation where more engorgement occurred. It was expressed that mouthparts that bring about the acceptance of different concentrations of sodium chloride are receptors known as gustatory receptions. In the instances lower sodium was engorged and high sodium was rejected.…
1. Make sure you have all of your materials ready and labelled to limit confusion and cross contamination (recommended: have separate pipettes for each respecting substance) 2. Blend your calf liver and divide the puree into 3 different separate cups measured 2g each – add 3 drops of water to each cup as well 3. In cup labelled “NaOH” add 6 drops of sodium hydroxide onto calf liver with the pipettes, then add 2ml of H2O2 (hydrogen peroxide) soon after – watch and record results in observation table 4.…
Today, I concluded the experiment of last meal mix up. Through multiple test, I was able to decipher which stomach content belongs to what person. The first test was the brown paper bag test, which allows me to see if the stomach content contains lipids or not.. This involved taking a piece of bag paper and using a pencil to divide it into five sections. Next, I labeled each section with the number of the stomach contents.…
All of the animal experiments were performed under an approved animal use regulation. Wistar rats (200−250 g) were procured from the Laboratory Animal Center. Animals were acclimated for at least 5 days, and fasted overnight before the experiment. 2.4. Standard solutions Standard solutions of 100.0 µg/mL of FLX, RIS, 9-OH-RIS and OLA each were prepared in methanol.…
Enzymes are protein molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within the cell. In the following lab was to examine an enzyme that is found in pineapples. That enzyme is bromelain its breaks down protein into their protein into their amino acid by a process of hydrolysis. They are found in tropical areas like Hawaii, Thailand, and Brazil. For the first experiment the hypothesis was that the when gelatin was added to the water, fresh pineapple juice, and canned pineapple juice and submerged into the ice chest the solutions would turn into Jell-O.…
It was accurately impossible to start the timer concurrently with Alka-Seltzer contacting water, therefore the timing of the rate of reaction were slightly off. Next time when this lab is performed, there should be an automatic timer which starts automatically as soon as the Alka-Seltzer contacts the water so that the rate of reaction is accurate. Second error consisted of human error. After the beaker was taken off from the hot plate when the beaker reached the certain specific temperature that was to be tested, the temperatures were not exact as the testing temperature because as soon as the beaker was lifted form the hot plate, and placed on to a colder surface, the heat transferred, causing the temperature to decrease and not be exact. Next time when this lab is performed the beaker should not be lifted from the hot plate and instead try to maintain the certain temperature of the water on the hot pate, and then drop the Alka- Seltzer.…
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.…
Michelle DeSanti Biology 22 (24556) Professor Linder 4 May 2017 Clinical outcomes: Evolocumab use for Cardiovascular Disease High cholesterol, two words that can certainly ignite a fear in a patient who is newly diagnosed with this common issue. Which brings us to the question, what exactly is high cholesterol and what makes it so bad? Low-density lipoprotein cholesterol, also known as LDL cholesterol is what many consider to be the “bad cholesterol”.…
Fill the flat beaker with water. 6. Place a plastic bag over the top of the cylinder and place it, upside down, in the flat beaker. Make sure the bottom of the beaker is always underwater. 7.…
After each of the three tubes had turned red, and their turning time had been recorded, the tubes were transferred back to the rack and cooled. The final color changes were recorded. The last test tubes with samples…
“Supersize Me” Essay The purpose of Mr. Spurlock’s experiment was to test if Mcdonalds would affect his weight and health. He got this idea after people tried suing Mcdonalds for causing obesity in the US. Every meal of his for the next month would be from Mcdonalds. There were 4 rules in his experiment that he had to follow. Rule number one, must only eat food/drinks from Mcdonalds.…
To determine the unknown’s morphology is the first step in narrowing down possible organisms. A MacConkey and Mannitol Salt Agar tests were conducted on the organism and revealed the following. No growth on the MacConkey plate resulting in a gram positive bacteria and the Mannitol Salt Agar result showed it could be Staphylococcus or Micrococcus. (1) A gram stain test was used in determining the shape, size and arrangement of the unknown bacteria (1). The unknown organism is heat fixed onto the slide, in order for the organism to be stained.…