No one would doubt that a human, cloned or otherwise, was alive in terms of the definitions above. However, there is also the question of what comprises human life, or more broadly, life in the special sense. Without getting into a discussion of the soul, a few characteristics of life in the special sense may be enumerated. This cannot be a definitive list for this classification is greatly dependent on personal opinion. Awareness - One of the most often cited characteristics of life in the special sense is knowledge of one's own existence.
Chimpanzees recognize themselves in the mirror.
A Space Odyssey was all too well aware of his own existence. I mean the ability to chose one path or another. In computers, it is a complex, but strictly defined set of rules which determines a course of action. All living things have the ability to maintain homeostasis, that is the ability to sequester their internal environment from the outside world. However, few organisms are able to manipulate the environment itself to benefit the organism.