1 Letâs not forget estrogen, progesterone, and testosterone, also known as the minor hormones. 2  Adequate levels of estrogen seem to help in hunger regulation, simulating the soothing âfullâ or satiety effect of serotonin.
Education. To land an entry-level job, zoologists and wildlife biologists need a bachelor's degree in zoology, wildlife biology, ecology, animal science or environmental studies. Key classes include anatomy, wildlife management, cellular biology and ecology.ou donât need certification to become a zoologist or wildlife biologist, but you do need extensive education. Some trade groups offer optional certification for wildlife biologists who want to burnish their credentials.
Marine biologists need at least a bachelor's degree in marine biology, and many continue on to receive master's and doctoral degrees in marine biology, according to the Bureau of Labor Statistics.ndergraduate Coursework. To become a marine biologist, students must select a major in marine biology or an equivalent. To achieve a bachelor of science in marine biology, students study physics, genetics, oceanography, chemistry and general marine biology.