Asthma is a lung disease that makes breathing difficult for millions of Americans. There is no cure for asthma, but the good news is it can be managed and treated so you can live a normal, healthy life. The American Lung Association is committed to supporting those affected by asthma. We offer a variety of resources and information about the disease.
The functions of life are movement, respiration, sensitivity, growth, reproduction, excretion and nutrition. Mrs Gren in school biology. The question does not ask that these units be able to carry out the functions of life independently, so the answer would be viruses in this case.
Since it is the function of all human beings to live a certain sort of life--and this life is an activity or action of the soul (think mind and spirit, here) implying a rational principle--then the function of good human beings is the excellent and noble performance of these activities or actions.