Lactose

1.)During the lab and based on recorded observations it can be deduced that the enzyme catalase found in potatoes only reacted to hydrogen peroxide. This is do to the fact that before 10 ml of hydrogen peroxide was added to each test tube residing 3 potato samples and the designated liquid, no reaction was observed. Thus demonstrating the catalase's inability to react to vinegar, soda, water, detergent, and Na OH. Furthermore, shortly after the hydrogen peroxide was added to the liquids of…

recently. I bet you saw some nice corn, pigs and cows. Speaking of cows, you asked me something `bout Milk the other day. To address your first question, “how does milk go sour?”. MIlk goes sour because it contains a sugar called lactose. Some bacteria live to make lactose react with oxygen to make lactic acid. When milk becomes warm, these bacteria grow faster. The faster these bacteria grow, the more they react with oxygen, the more lactic acid is created and the faster the milk goes sour.…

inoculation onto Kligler’s iron agar determines if an organism can ferment glucose and lactose, it also detects the production of hydrogen sulfide from the breakdown of cysteine. Our Kligler’s iron agar showed acid with gas production, meaning K. pneumoniae fermented both glucose and lactose. The hydrogen sulfide production was negative. A Litmus Milk test is done to determine whether the organism can ferment lactose, digest the milk proteins using proteases, cause the…

and Biological test were preformed to identifiy the isolates characteristics. The following characteristics were tested: gram-stain, motility, morphology, hemolysis, lactose fermetation, mannitol fermentation, osmotolerance, aesculin hydrolysis, starch hydrolysis, gelatine hydrolysis, amino acid decarboxylation, lipid hydrolysis, lactose fermetation, casein digestion, catalase enzyme production, cytochrome oxidase enzyme production, citrate utilization, tryptophan hydrolysis, urease enzyme…

Introduction Charles Darwin is famous for his book, The Origin of Species, where he proposed that evolutionary change in populations is due to natural selection. His idea was that of survival of the fittest. In other words, the species with superior traits would have more of a likelihood to live, and then breed more offspring. Slowly, more and more of the species with the superior traits will survive and multiply. But what is it that gives these species the better survival trait, and allows…

Introduction and Purpose: Carbohydrates are one of the main types of nutrients, and the main energy source of the human diet. It can be found in a wide range of both healthy and unhealthy foods such as bread, bean, cake, popcorn, cookies, and soft drink (Harvard.edu). The consumption of bad carbohydrate that increases your blood sugar should be limit. If the blood glucose stays high for too long, it can develop type two diabetes (womenheath.gov). In addition, carbohydrates are the most…

fermentation as well as mannitol fermentation. The data gathered is consistent with the results for S. liquefaciens in comparison to another Serratia species such as S. fonticola or S. rubidaea, which are both positive for lactose fermentation, meaning that they can carry out lactose…

means I should probably eat some strawberries. If I continue to have a low intake of Ascorbate, it increases my chances the deficiency disease, Scurvy, and the symptoms. My iron intake on this day was low, which is bad since I am anemic. Due to my lactose intolerance, the intake of Vitamin D is also low but can also found in sardines. A low intake of Vitamin D increases my chances of being diagnosed by a doctor with Osteomalacia. The sodium intake of this day 7172 milligrams, which is too high…

Therefore, our target market is dominatingly individuals with exceptional dietary needs, especially the individuals who have diabetes, gluten and lactose intolerance, and dairy sensitivity living in Vancouver and other encompassing areas. We focus on this market due to the fast development rates of diabetes and other food sensitivities. Also, as indicated by Canadian Digestive Health Foundation, number…

on the enzyme thereby changing its shape for blocking the substrate (OpenStax Biology, 2017). In this lab, the enzyme beta-galactosidase was used. In the bacteria Escherichia coli, it is used to catalyze the breakdown of lactose into galactose and glucose and to convert lactose into allolactose. The enzyme can also be used in colorimetric assays with substrates such as ONPG, which is used in this lab. The product of ONPG and beta-galactosidase is ONP (Douglas et al 2001). ONP has a yellow color…