Which is NOT influenced by a change in the pH of body fluids? ? potassium excretion ? phosphate excretion ? enzyme activity ? protein shape and activity ? nerve and muscle excitability
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Step 1: pH is a measure of the acidity or alkalinity of a solution. Show more…
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Madhur L.
From the list provided pick 3 biochemical reasons why maintaining pH through buffers is important for (natural) biological processes: Biochemists wish to replicate physiological conditions Maintaining pH is what cells always do Experiments need to be done at physiological pH Ionisation state of ionisable groups need to be controlled Enzyme-catalysed reaction rates may vary with pH Proteins can unfold at extreme pH The proton concentration per se is not important, but pH always matters
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Which enzyme has the most pH-specific requirement? Pepsin. Based on the optimum pH for pepsin, which organ would you expect to find pepsin? Stomach. Arginase is one of the enzymes in a sequence of reactions that converts ammonia into urea. Use this information to explain why arginase has an optimal pH of around 10. Complete the following table by filling each line with the correct value: The All or Nothing Principle applies to this question. Therefore, you must get all the blanks correct in order to receive credit. There is partial credit for your work. Atomic Number Atomic Mass Number of Protons Number of Neutrons Number of Electrons Element C Cl 160 LA
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