Physiology :  (noun)
1: the branch of the biological sciences dealing with the functioning of organisms
2: processes and functions of an organism

aerobiology, agrobiology, anatomy, astrobiology, bacteriology, biochemics, biochemistry, biochemy, bioecology, biological science, biology, biometrics, biometry, bionics, bionomics, biophysics, botany, cell physiology, cryobiology, cybernetics, cytology, ecology, electrobiology, embryology, enzymology, ethnobiology, exobiology, genetics, gnotobiotics, life science, microbiology, molecular biology, pharmacology, radiobiology, taxonomy, virology, xenobiology, zoology,