"Biology does so demonstrate. But not that this organism is a Human Being. A Human Heart, in the process of transplantation, is an example another such living human organism that is not a Human Being."
You demonstrate your exceptional ignorance with this statement. A human heart is never considered "an organism." It is a component and has no natural means of ever becoming anything more than that. It has the same DNA as the organism which produced it. A human zygote is not a component and possesses unique DNA, distinguishable from its parents.