Purpose: The purpose of this experiment is to see how long it takes for the 10 spinach leaf discs to undergo photosynthesis and thereby rise in the two solutions. Hypothesis: All of the leaf discs in the sodium bicarbonate solution should be floating before the discs in plain water because the bicarbonate is a carbon source that will allow photosynthesis to continue. Background: Light is absorbed by leaf pigments (chlorophyll) which makes electrons within a photosystem moved to a higher energy level.
starches) and oxygen as a waste product. The formula for photosynthesis is 6CO2 (Carbon Dioxide) + 6H2O (Water) in the presents of sunlight and chlorophyll → C6H12O6 (Glucose)+ O2 (Oxygen). In order for photosynthesis to occur the plants have to have energy from sunlight and chlorophyll. The rates of photosynthesis are affected by the amount of water, temperature, and the intensity of sunlight.
Photosynthesis and cellular respiration are processes that help human beings live. The reactants in photosynthesis are carbon dioxide, water, and the sunlight’s energy. The products of these reactants are glucose and oxygen. Photosynthesis takes place in the chloroplasts in only plant cells. This is when plants convert carbon dioxide and water into glucose by using the sun’s energy.
The experiment was carried out in order to record the amount of carbon dioxide created with varying amounts of calcium carbonate. The hypothesis stated that the more calcium carbonate was added, the more carbon dioxide would be produced. This statement was supported by the results collected from the experiment. The setup for the
We then added 10cm3 ethanoic anhydride to the salicylic acid and swirled the contents, this mixes together the two chemicals. We then added 5 drops of concentrated sulphuric acid to the flask and thoroughly swirled the mixture, this creates the solution that makes the aspirin. We then warmed the flask for 20 minutes in a 400cm3 beaker of hot water which was approximately 60°C, we made sure the flask did not go above 65°C because this could have caused the contents to evaporate. Part 2: Using a 25cm3 measuring cylinder we measured out 15cm3 of ethanol into a boiling tube and then prepared a beaker half filled with hot water at approx. 75°C, we got this temperature by filling the beaker with cold water and slowly adding boiling water from a kettle until we reached the right temperature.
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. Our
If they are not, they will increase in concentration and may interfere with chemical reactions or damage cells. Waste products that must be removed include carbon dioxide. You test Carbon dioxide by using a lighted wooden splint in a tube of carbon dioxide and another way is to bubble the gas through limewater and carbon dioxide will turn the limewater cloudy.
As said before, the background states that light conditions increase transpiration by keeping the stomata open to exchange gases for photosynthesis. As shown in Figure 1, the pansey under the light showed a much higher negative percent change in mass through transpiration than any other of the plants. This portrays that the light from the lamp caused the stomata on the pansey to continuously be open in an attempt to exchange gases for photosynthesis, but were losing water through evaporation instead. The background also states water potential is the measure of the potential energy of water that water flows from areas of high water potential to low water potential. It finally states that heat increases the evaporation of the water within the stomates which ultimately increases the rate at which water moves from root to leaves.
What are the similarities and difference between cellular respiration, fermentation, and photosynthesis? Well, cellular respiration is a series of chemical reactions that convert into energy in food molecules into a usable form of energy called ATP. Fermentation is a reaction that eukaryotic and prokaryotic cells can use to obtain energy from food when oxygen levels are low. Photosynthesis is a series of chemical reactions that convert light energy, water, and CO2 into the food-energy molecule glucose and give off oxygen. The similarities are, they all make energy/food to make energy.
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.
Stoichiometry is a method used in chemistry that involves using relationships between reactants and products in a chemical reaction, to determine a desired quantitative data. The purpose of the lab was to devise a method to determine the percent composition of NaHCO3 in an unknown mixture of compounds NaHCO3 and Na2CO. Heating the mixture of these two compounds will cause a decomposition reaction. Solid NaHCO3 chemically decomposes into gaseous carbon dioxide and water, via the following reaction: 2NaHCO3(s) Na2CO3(s) + H2O(g) + CO2(g). The decomposition reaction was performed in a crucible and heated with a Bunsen burner.