Substrate concentration basically means the amount used for the substrate. The substrate in our experiment was 0.1% hydrogen peroxide. The 0.1% is the concentration amount. Just like temperature and pH, substrate concentration can speed the reaction only up to a certain limit. When we mixed pH 3 enzyme tube with substrate tube, we used 0.3 mL of hydrogen peroxide, but if we were to increase the amount, then the experiment would have been faster.
Question: This lab investigates the question how does changing the amount of sugar affect the growth rate of rock candy? Purpose: This is important to investigate because it has to do with solutions and growth rate and so finding a way to increase the growth rate in a shorter amount of time would be ideal and important. Although the use of sugar will not be the same for every solution, this would just be something for other tests to be based off of. Another importance of this experiment is to show the effects and properties of supersaturation using crystal growth. Background: To be soluble it means an object or substance can be dissolved, this is especially true of sugar when making rock candy.
The glucose in your blood comes from carbohydrates in your food. Carbohydrates include sugar and starchy foods like: bread, pasta and rice. Keywords: Carbon dioxide, Glucose, Water, Oxygen and energy. Word and Symbol equations: Glucose + oxygen = Carbon dioxide + water C2H12O6 + 602 = 6CO2 + energy (ATP) Task 2 – Investigating Respiration You identify Carbon dioxide gas by putting a lighted wooden splint in a test tube of carbon dioxide and carbon dioxide turns limewater cloudy white.
This lets us to notice what in the red blood cell was able to permeable across the cell membrane, since they were placed in different osmolality solutions we are able observe the tonicity of the cell’s behavior. When the Erythrocyte is placed into a hypotonic solution, the cell will swell because water will move gradually into the cell. The concentration of solutes are lower outside than the inside of the cell, so the water will move in the cell and cause the cell to swell. If the cell was placed to hypertonic solution, the solution has a higher solute concentration than the cell, so the water moves out the cell and causes the cell to shrink. When the red blood cell is placed into a isotonic solution, the concentration of the
1% glucose, 1% maltose and 1% lactose all progressively get positive results by changing colours to reddish brown at the end of this experiment. In this case the aldehyde functional group that is present in the products (monosaccharides and some disaccharides) in this reaction is able to reduce copper in the presence of alkali and this produces colour changes while converting to an aldose sugar. Honey is made of fructose and glucose which instantly turned brown after the test-tube was placed in the boiling water because of its active aldehyde and carbonyl group. The copper (II) sulphate present in the Benedict’s solution reacts with electrons from the aldehyde group which results in a redox reaction to from cuprous oxide, a red brown precipitate that seen in all of the above mentioned solutions (Hill, 1982). Beer also gave positive results because it contains aldehydes and ketones (i.e.
Abstract The purpose of this lab was to identify the unknown and find out which solution is solubility. The test was done to determine the identity of the compound include solubility test, flame test, formation of precipitate and last PH test. It was found that the unknown compound smell like chorine, was soluble in water. The flame test matches the color of calcium chorine indicating that the unknown compound contained chorine, also the anion test sodium chorine proved to be positive. Resulting in the experiment that the unknown compound was chorine.
This means that the reaction acted quicker and would increase the probability of the sample being pure, this would mean that you didn’t have to wait very long and the material changes that have taken place whilst the reaction was taken place would be easier to define and make a note of the start and end point. The precipitation reaction forms aspirin crystals which involves joining ions in solutions to form a precipitate. Another technique that we used was filtration. The equipment we used was a Buckner which uses gravity and a vacuum and this gets rid of the moisture in the sample and creates a dry sample. Another technique would be dissolving and reacting which involves the crystals to be made and for the chemicals to react to make the
Controlled Variables The variables which are controlled are the size of the beaker, the temperature and the volume of the solutions added, such as the distilled water, HCL, sodium iodide solution and the Iron (III) nitrate 9-hydrate solution. The volume must be controlled because each condition consisted of different concentrations of the reactants, the volume would differ in each one. Constant volume was kept to make sure that all conditions had the same number of moles of reactants. Reactions with smaller volumes may have reacted faster than those with larger volumes because successful collisions would occur more frequently. This was controlled by adding a sufficient amount of distilled water to each condition, so the volume stays consistent.
The concentration of the acid was 0.1M, which was placed in all three agar cubes to maintain consistency of results. Another variable of the experiment that was controlled was the time in which the agar cubes spent in the sulphuric acid. The time allowed calculation of the rate of diffusion. The size of the agar cubes was controlled by using a grid and scalpel to, as accurately as possible, cut the agar cubes into the appropriate sizes. The shape of the agar cubes was also controlled.
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
6. How would you design an experiment to show how much faster H2O2 decomposes in the presence of an enzyme then it does without the enzyme? Use the same system and just add it with water and compare both of them. 7. Explain why the enzyme is still active even though the liver cells from which you obtained the enzyme were no longer living?
A Gly-chloride ion boundary is formed since glycine moves slower than chloride ion. However, glycine still runs slightly faster than other proteins. As a result, the glycine keeps pushing the protein towards the chloride ion. In other words, the proteins are trapped between glycine and chloride ion. The proteins form a very tight band inside the stacking gel.
Without enzymes in our body, it would take a longer period of time for digestion to occur. Enzymes bind themselves to substrates, thus lowering the activation energy of the chemical reaction they are catalyzing. This will increase the reaction speed making digestion to occur faster. Pepsin is an enzyme found in the gastric juice in the stomach. It is produced by the gastric cells and it is formed when pepsinogen is released.