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Biology Lab Report

Per3 Gene and Diurnal Preference
The high base solution will rupture the cell membrane and create pores in the membrane. Then 100µl of 0.1M HCl and 100µl of 1M Tris – HCl was added at a pH of 7. The cell organelles are present in the solution and they are separated from the solution by centrifugation. The crude cell lysate will contain the DNA.
Pages: 7 (1000 words), Lab Report
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Catabolite Repression and Induction of Beta-galactosidase Synthesis in E. coli
Apart from induction, synthesis of β-galactosidase is also influenced by catabolite repression. The process involves slow down of the synthesis process, facilitated by lactose, especially when a presence of glucose is detected. Intuitively, glucose acts as a better energy and carbon source than lactose (Wallenfels, 1972, 67). 
Pages: 6 (1500 words), Lab Report
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Lactase Enzyme Activity
Based on my knowledge of the effects of temperature and pH on the enzymatic activity of lactase, if the lactase used in today’s lab was extracted from human cells, I hypothesize that lactase enzyme activity will be optimal at temperature and pH of 400C and 8 respectively.
Pages: 6 (1500 words), Lab Report
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Alcoholic Fermentation
Beer preparation by fermentation involves picking rye, wheat or barley followed by germinating, drying and pulping it into a mash. The mash is mixed together with hot water and transferred to a fermentation vessel to commence the process of fermentation. Yeast is added to the mixture that converts the sugar present in the ash to carbon dioxide and alcohol. 
Pages: 5 (1250 words), Lab Report
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