What happens to the structure of the protein when the temperature rises above the functional level? a denatures b increases enzyme function c does not disrupt the protein structure d protein continues to function as normal

The correct answer is option A, that is, denatures.  

The extreme temperatures lead to the unfolding of a polypeptide chain resulting in a change in composition and generally a loss of function. If the protein working as an enzyme denatures, it will make that protein to lose its enzymatic activity.  

As the temperature of a solution comprising the protein is elevated, the extra heat results in bending and twisting of bonds. As proteins start to denature, the secondary composition of the protein is lost and adopts a random coil configuration. The covalent association among the amino acid side chains like disulfide bonds also gets lost.  

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.