In the human stomach, chemical reactions take place in an acidic environment. some of these reactions are catalyzed by enzymes. how would these enzymes most likely function in an environment where the ph was doubled?
(a)the enzymes would interfere with chemical reactions by bonding with the reactants.
(b)the enzymes would not be able to function properly outside of their optimal ph range.
(c)the rate of the reactions that are catalyzed by the enzymes would double.
(d)the rate of the reactions would increase as the ph is increased.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.