In systemic tissue fluids, the enzyme carbonic anhydrase catalyzes the reaction co2 + h2o → h2co3 (which then can dissociate into h+ and hco3–). in fact, co2 released from cells is converted to hco3– ions and travels in that form in the bloodstream. hco3– is reconverted to co2 + h2o in the pulmonary capillaries by the same enzyme, and there the co2 is exhaled. how is it possible for the same enzyme to catalyze reverse reactions?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

Explain how global warming could have affected yellowstone frog and salamander habitat's, resulting in changes in the populations of these species

What powdery mineral is a health hazard when airborne?