The highest reaction rate during the lab was with a temperature of 30℃, which makes sense since catalase is found in the liver at a temperature of 37℃ (Buddies, 2012). The temperature of 30℃ was the closest to catalase’s normal temperature which is why it yielded the highest reaction rate. Therefore, in order for the body to discard the toxic hydrogen peroxide, the body must constantly maintain a temperature of 37℃ to prevent cell damage (Sciencing, 2018). At extreme temperatures, an enzyme’s activity will decrease because enzymes have a very narrow range in which they can effectively function. The results from the lab show that at 100℃, catalase has no reaction with hydrogen peroxide.
Chemical stress affected the cell membrane of a beet cell, because of the higher amount of ethanol added to the beet. For example, we added 1% ethanol, 25% ethanol, and 50% ethanol to 3 test tubes with 15 mm of beets inside. We left it with no air inside for 30 minutes then tested the absorbance of the ethanol without the beet. The class got roughly 0.273 for the 1% ethanol, 1.205 for the 25% ethanol, and 1.882 for the 50% ethanol concentration. In each solution, the ethanol was a bit redder than the last.
They react with oxygen naturally in the air to make heat, light, water vapor, and carbon dioxide. 3 The amount of heat given off by this combustion reaction is roughly one-fourth. It takes a few minutes for this combustion reaction to stabilize when you first light a candle. Once the process is stabilized, the flame will burn with ease in a dewdrop shape, giving off water vapor and carbon dioxide.3 History of Candles Candles have been used for light and to brighten humanity 's celebrations for more than 5,000 years, but there is limited information about their descent. The Egyptians were using wicked candles in 3,000 B.C., but the Romans are usually credited with developing the wicked candle.
Agitation rpm level tannase production Agitation rate was at a range of 50 to 250 rpm level was chosen to determine the optimal rate. It was found that an agitation rate of 100 rpm at pH 6.0 and 37°C maximum yield of tannase production of 3.12 U/ml (Fig.4) it was also noted that an increase in agitation speed above100 rpm resulted in a drastic fall in tannase enzyme production. The agitation speed below 100 rpm level resulted in an inadequate mixing of the broth towards of the broth. Towards the later stages of growth. Effect of carbon and nitrogen sources In the present study, addition of sugars as a potential carbon source did not have any positive effect on extracellular tannase enzyme production.
Milk contains lysine which is an amino acid and lactose. According to the experiment browning in non-fat dry milk, the milk powder will turn browner the longer it is left in the oven. When the non-fat dry milk samples leave for 10 minutes, it turns pale yellow, for 20 minutes, it is a bright yellow color, while it is 30 minutes, it is yellowish with a slightly brown and at 60 minutes, it turns into brown color. The prolonged stay in the oven causes the production of melanoidin to increase, thus explaining the increase in
The hypothesis can be accepted because when the temperature of the hydrochloric acid was 55.0°C, the time taken for the magnesium to dissolve completely was 182.23 seconds. As I decreased the temperature of the hydrochloric acid, the 3 cm magnesiums trip took longer to dissolve. When the temperature was 42.7°C, the time taken to dissolve the magnesium strip was 406.26 seconds. The time taken increased dramatically by 224.03. This proves that my hypothesis was correct.
The processed data indicates that after completion of 60 minutes, the white candle reduced from a height of 1.4cm to 0.6cm, while the red candle was reduced to a height of 0 cm. Furthermore all the other colored candles were recorded at a lower height, compared to the white candle after burning for 60
In the plasma acid degumming process, the pectin degraded. When processing temperature increased from 20 oC to 90 oC, the effect of plasma acid was enhanced. According to the pectin removal rate, processing temperature and time were the important factors. Under 1:10, 90 oC, and 80 min (A1 B3 C3) condition, the pectin removal rate was better. In plasma acid processing, lignin swelled and further dissolved, including aromatic ring fracture and the molecular weight decrease.
It can be significantly decreased airborne disease transmission from an infected patient in the hospital environment as well as being effectively removing allergens from the air and helps people who have Asthma. Furthermore, during summer heatwave, there were increasing in the mortality rate attributed to heart diseases this proportion has dramatically declined because of using air conditioners in homes and workplaces. In contrast, to power air conditioners, the demand of energy has increased continuously in the last decades, which contributed to global warming. In Saudi Arabia for example, around 70% of energy consumption is used to power air conditioners, and the majority of greenhouse gas emission comes from burning fossil fuel for electricity. with the consequences of climate change may also grow the demand in the future.
After seeing this data the two most effective look chemical at resisting energy was CaCl2 and LiCl. So we looked at the price of both of this chemical CaCl2 cost 6.55$ per 500g and LiCl cost 32.75$ per 500g because CaCl2 was substantially cheaper we decide to chose it to use in own hand warmer. We calculated that it would take 22g of CaCl2 to create a 20oC increase in temperature of 100ml of water. Some sources of error in this lab, would be heat escape from not be able to replace the lid of the calorement went adding chemical into it, inaccuracies in the balance, and not waiting of the proper time to recode the
The beginning reaction that occurred at the pH level of 1 shows that the mean reaction rate was incredibly low, at 2 mL/minute. This then increased by 57 units once it reached its peak productivity of 59 mL/minute observed at pH 8. pH levels 6, 7, and 8 only varied between 1 and 2 mL/minute, which demonstrated similar rates of reaction. At pH 10, the reaction rate decreased considerably as it declined by 58 mL/minute, and maintained that productivity at pH 12. The scatter graph included in the results section further solidify and visually represent these observations. The reaction rate of the catalase exposed to pH 1 is barely conceivable on the diagram as its average rate of reaction was 2 mL/minute.
In the experimental tobacco group we added the same amount of substances only difference was 50 microliters of tobacco extract was added to the mixture. We then obsevered the two slides for number of cells as well as for food vacuoles inside a cell using a microscope at times of 0,5,10,20, and 30 minutes. Results The following graphs show the results of this experiment. The tetrahymena sample that was introduced to concentrated tobacco had a lower cell/vacuole ratio than the tetrahymena sample that was not exposed to
82 ⁰C; 1H-NMR (CDCl3): δ 7.65 (dd, 2H), 7.39 (dd, 2H); 2.42(s, 3H); FT-IR (KBr): 3120, 2983, 1600, 1514, 1411, 1383, 1274, 1230, 1157, 1093, 1041, 989, 839, 690, 613 cm-1. 1-(4-bromophenyl)-5-methyl-1H-tetrazole (2). White crystals; yield 87 %; mp. 118 ⁰C; 1H-NMR (CDCl3): δ 7.75 (dd, 2H), 7.58 (dd, 2H); 2.45(s, 3H); FT-IR: 3084, 2983, 2879, 1516, 1492, 1408, 1273, 1118, 1101, 1076, 1039, 1008, 844, 821 cm-1. Conclusion.