Embryos meet the biological definition of ‘living being’. From the Biology Online definition of ‘life’:
An embryo has all of these capacities: it grows, it metabolizes, it responds to stimuli, it adapts, and it has the capacity to reproduce. Therefore, “life”.
An embryo that is formed from the union of a human sperm cell and a human egg cell is ‘human’. It cannot ever become anything else – not a pig, or a bird, or a rock, or a fish. It will always, and only, ever be a human.
Therefore, “human” and “life”, and so, “human life”.
I think you’re confused.
Nevertheless, please help me understand the case you’re making. What’s the ‘end’, and what are the ‘means’, that you’re seeing here? More to the point, given what this phrase means in the context of Catholic Moral Theology, how is the ‘end’ morally good, and how are the ‘means’ morally evil?