The covalent catalytic mechanism of an enzyme depends on nucleophilic attack by an active site cys whose pk is 8. a mutation in a nearby residue alters the microenvironment so that this pk increases to 10. would the mutation cause the reaction rate to increase or decrease?

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

The softest and hardest minerals are: softest hardest

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.