Abiologist claims to have discovered a single-celled organism that is evolutionarily unrelated to any organisms known to inhabit earth. which observation made during an extensive study of the organism most solidly supports the biologist's claim?

The chemical identities of the aminoacids making up the organism's proteins differ from those found in bacteria.

Explanation:

The bacteria is considered as the most primitive organism to be existed on earth.

This fact is suppoted by the molecular and chemical composition of the living beings which suggests that on comparing the bacteria with other organisms supports the difference.

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.