MLT1 Task 5 Essay Example | Topics and Well Written Essays - 250 words

MLT1 Task 5 - Essay Example Streptococci lacti) and Lactobacilli (e.g. Lactobacillus casei, L. pentosus), which produce lactic acid as the end product of fermentation (Buchanan & Cibbons, 1974). Other glucose fermenting bacteria that produce these acids are Proteus, Shigella, Salmonella, Escherichia coli, Microbacterium and Leuconostoc (Buchanan & Cibbons, 1974). When using phenol red indicator in the broth media, two bacterias that ferment glucose were the E. coli and Shigella sonnei, they produced measurable acid by-product because the broth media changed from red to yellow. Therefore, organisms like Escherichia coli, ferments glucose through fermentation thereby liberating large amount of three types of acids like succinic, lactic, and acetic, which changes the media from yellow to red (McDevitt, 2009). The Voges – Proskauer test is appropriate because of the detection capability of acetoin, which is produced by the bacteria that use it as metabolic intermediate by following the butane diol pathway (Buchanan & Cibbons, 1974). This test is used when differentiating Escherichia coli from other Enterobacter  species like Enterobacter  aerogenes because E. coli is positive in Methyl red yet negative Voges-Proskauer whiles the Enterobacter  aerogenes is negative in Methyl red test and positive in Voges-Proskauer (McDevitt, 2009). Availability of main source of food determines the enzymes and the pathway of glucose metabolism because different nutrients require specific enzymes hence determining the pathway (Dannessa, 2014). However, alternative pathways are used when organism require a specific amount of ATP, since different pathway produce a certain amount of ATP after oxidation of glucose (Dannessa,

Beyond Auto Dependence Essay Example | Topics and Well Written Essays - 500 words

Beyond Auto Dependence - Essay Example From this paper it is clear that  the development of cities is dependent on the adoption of a sustainable mode of transport. The future of the cities is defined by the extent to which automobile can be discarded for alternative economic establishments. Cities should endeavor to improve urban centers and enhance the public spaces meant for cyclists and pedestrians. Kenworthy  states that it is necessary to ''improve the urban centers and enhance the public space for pedestrians and cyclists.''   The infrastructure design should take into consideration the plight of the populations that use the pathways or cycle to various destinations. The development of freeways promotes the use of cars yet such propensities extract the land that can otherwise be used for other essential development.As the study highlights  cities should introduce welfare structures that allow citizens to share cars and bicycles. Car-on-demand schemes should be introduced in various jurisdictions to reduce ca r ownership. Car ownership is responsible for the congestion that is witnessed in urban settings. Kenworthy notes that it is important to ''introduce vehicle car and bike sharing and car-on-demand schemes to help reduce car ownership''. Congestion should be penalized to discourage the ownership and embrace sharing.  The use of trains for transportation is testimony that the possibility of people sharing in terms of mobility is high.