Absolutely! This is a definite case where size does not matter! Whether you call the unborn child a zygote, an embryo, or a fetus, these are all just different stages of the child's development in the womb.
Moreover, if a pregnant woman is murdered, isn't it usually called a double homicide?!
If a scientist were to find a single-cell organism on, say, Mars, they'd be exclaiming, "There's LIFE on Mars! So it's a bit hypocritical to say that a "clump of cells" that are destined to grow into a human being inside the mother's womb is not LIFE!
Can anyone show me where the U.S. Declaration of Independence or the Constitution says that "life, liberty, and the pursuit of happiness" were to be guaranteed to a person ONLY after that person left his/her mother's womb?! I thought not!