If the sample to be analyzed is non-volatile, the techniques of derivatization or pyrolysis GC can be utilized. Gas chromatography (GC) has been an indispensable analytical technique in the application of fatty acid determinations in oilseed plant breeding, biosynthesis, and human metabolism. As well as the characterization of complex mixtures of geometric isomers when combined with other chromatographic separations and spectroscopic identification. Plant cultivators utilize GC as a more accurate and fast method to evaluate the differences and inheritance of fatty acids in oilseed crops such as rapeseed. flaxseed, and safflower.
7. Will the temperature effect the pH Scale? Hypothesis: The hypothesis of this experiment is that the rate of reaction will increases well as the hydrogen peroxide concentration. If the temperature, pH and enzyme concentration is kept constant then the rate of reaction will start to decrease as well as the hydrogen peroxide concentration. Aim: To investigate the effects of changing the concentration of the enzyme catalase that it has on the rate of breaking down the Hydrogen Peroxide solution.
Glucose, which is a six-carbon sugar, is at that moment divided into two molecules of a three carbon sugar. The breaking down of glucose, takes place in the cell’s cytoplasm. Glucose and oxygen are produced from this breakage, and are supplied to cells by the bloodstream. Also produced by glycolysis are, 2 molecules of ATP, 2 high energy electron carrying molecules of NADH, and 2 molecules of pyruvic acid. Glycolysis happens with or without the presence of oxygen.
All organisms use food molecules, like glucose to produce ATP. The production of ATP occurs during cellular respiration. ATP provides the cells with energy that is necessary to produce oxygen. The seeds/plants are autotrophic organisms, which produce their food from the energy that the light provides them. To release the stored energy within the food molecules, the germinated seeds carry out respiration and the release of carbon dioxide.
Then, tests are performed to determine if the products of aerobic and anaerobic respiration are present in the flasks. The citric acid cycle consists of a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy in the form of ATP (Biology). The tests detect the presence of carbon dioxide and ethanol. Carbon dioxide should be present irrespective of the type of respiration taking place, but ethanol is present only if fermentation has occurred. Another factor that can indicate whether fermentation occurred or cellular respiration occurred is the amount of glucose utilized during incubation.
The process of respiration occurs according to Boyle’s law. Boyle’s law states that for a fixed mass of gas at a constant temperature, the volume is inversely proportional to pressure. This means that as volume increases pressure decreases and vice versa. During inhalation the intercostal muscles and diaphragm contract resulting in an increase in the volume of the lungs and hence the thoracic cavity. As the volume increases, pressure decreases creating an area of sub atmospheric pressure within the lungs.
Swikriti Dasgupta HL IB Chemistry Determination of the Relationship Between Concentration and Rxn in Voltaic Cell: Research Question: How does the concentration of CuSO4 affect the voltaic cell as measured by voltmeter? Variables: Table 1: Independent Variable for Determining the Relationship Between Concentration and Rxn in Voltaic Cell: Independent Variable How it will be changed CuSO4 CuSO4 solution was diluted to 50% using distilled water. Then the diluted CuSO4 was further diluted to prepare 20%, 40%, 60%, 80%, and 100% dilution.
It measures the flow of heat in the phase transitions. It is used widely in most of the industry include foods, agriculture and etc. If the samples tested undergoes endothermic process which absorb energy, the temperature of the sample pan will decrease, so more amount of heat is required to ensure the temperature to reach equilibrium. This extra amount of heat is same as the amount of heart absorbed in endothermic process (Figura and Teixeira, 2007). (Slideshare.net, 2016)
Record results to determine if NaHCO3 increases or decreases the pH of the water. 10. If NaHCO3 increases the pH of the water, it shows that it will increase the pH of the blood and if NaHCO3 decreases the pH of the water, it shows that it will decrease the pH of the blood. 11. Add 30ml of 0.1M HCl into a beaker containing distilled water.
Exploration Title: Effect of Temperature on rate of Osmosis Submitted By: Abdulkarim Kamal Date Submitted: October 19th 2015 Subject: Biology HL Teacher: Mr. Nick Aim: This is an investigation to determine the relation between temperature of a solution (sucrose) and the rate of osmosis Scientific Context: Osmosis is defined a passive transport process in which a fluid diffuses across a semi-permeable membrane, from an area of high solute concentration to an area of low solute concentration and vice-versa. There are various factors that could potentially influence the rate of osmosis; these factors include volume, concentration, and temperature. If all external factors that may interfere with rate of osmosis are controlled, the results will show equal amounts of fluid on both sides of the barrier (membrane); this is known as an “isotonic” state.
Cellular Respiration Lab Introduction In this lab, the primary investigation was to discover which factors affect cellular respiration. In this particular inquiry, the factor tested was the amount of time the lentil seeds were germinated. This study was performed in order to understand the process of cellular respiration as well as be able to measure and observe gas concentration as a result of impacting factors. Cellular respiration is necessary for life-processes, converting glucose and oxygen into ATP, carbon dioxide, and water, in a series of metabolic reactions.
The control in the experiment is water. Units used while timing the productivity of gas from an Alka-Seltzer tablet in different temperatures is, seconds. In order to find out if temperature controls the rate of chemical reaction, whether hot water is a more effective way to make the gas produce at a faster speed, it would be necessary to compare the results of different temperatures at the end of each trial. In order to do this the scientists will measure the volume of gas that is produced within a 10 second interval time after the tablet begins to react.
Cellular respiration can be measured by the consumption of oxygen, the consumption of carbon dioxide, and the release of energy during cellular respiration. Within the experiment conducted, the relative volume of O2 consumed was measured into different temperatures within germinating and nongerminating peas, (DeStefano). Fluids and gas flow from regions of high-pressure to regions of low-pressure this carbon dioxide produced during cellular respiration will be removed by potassium hydroxide and will form a solid potassium carbonate. Due to the removal of carbon dioxide, the change in the volume of gas in the respirometer will be directly related to the amount of oxygen consumed. In this experiment using a respirometer, the scientists were able to measure the amount of oxygen being consumed in relation to how quickly the peas were respiring.
The experiment we did was a lab to discover how “Miracle Gro” affected the germination of seeds. My group’s original hypothesis was that the seeds with the highest concentration of “Miracle Gro” would grow the most compared to the other seeds. However, after 8 days, the results were the exact opposite; the seeds that got 0% of “Miracle Gro” turned out to be the healthiest and tallest. By the third day, all five seeds, for the water solution, where sprouting. On the other hand, the solution with 4% “Miracle Gro” only had 3 seeds starting to sprout.