However, certain wasp species such as pollen wasps have similar behaviours, and a few species of bee scavenge from carcases to feed their offspring. The world's largest species of bee is thought to be the Indonesian resin bee Megachile pluto, whose females can attain a length of 39 millimetres (1.54 in).
For a Ph.D. in Psychology: Most Ph.D. programs require at least 5 to 7 years to complete. In addition to regular coursework, you may also be expected to complete an internship or supervised residency. The program usually culminates in completing an original research project or dissertation.
A PhD is the highest degree you can get. However, it's not a medical degree. It's a research degree. A medical degree is an MD, which takes 4 years of med school after the bachelors, and includes internships/residency after that (3-5 years).Depending on what you want to do with the PhD, you might need a postdoc (2-6 years of working in the field in temporary positions).est Answer: Bachelors = 4 years Masters = 2 more years PhD = 4 to 6 more years Combined Masters and PhD = 6 to 8 years more than a bachelors. However, to prescribe medicine that is a who different ball game. You have to go to medical school for that.