What are questions that biologists might ask about the living things they study

1) The origin of life. 2) The mechanisms of evolution. 3) The control of the size, both of the organs and of the living beings.

Explanation:

Some examples,

Are gender traits completely a result of societal expectations?

Are there any parts of the human body that get oxygen directly from the air and not from the blood?

Are there nuclear reactions going on in our bodies?

Can humans ever directly see a photon?

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

the missing space is phylum