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Public health and the maintenance of the same is integral to any developed nation. To that end, in the United States, federal, state, and local agencies must work to establish guidelines, rules, and requirements that provide baselines to protect the health of the public at large. Using information from the […]

your friend is intrigued by a recent report of a new species of bacteria that used arsenic instead of phosphate within their DNA. this report spurs his curiosity about alternative life chemistries. he decides to test whether he can find a life from that utilizes selenium instead sulfur.a) briefly explain […]

QUESTION 1: Cell fractions and buffers (a) What factors determines the forces that a particle experience during centrifugation? (b) Name the techniques usually employed to obtain cell free extracts/”brake cells open”. (c) Indicate how mitochondria can be isolated by differential centrifugation. (d) Why is it important to know the pKa […]

Question 1 1. Choose the optimal enzyme concentration(s) observed.1. 50 uls2. 100 uls3. 200 uls Question 2 5. Based on the data at pH 2, what can you surmise happened to the active site?1. It stayed the same shape2. Its shape changed such that the substrate no longer fit inside3. […]