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It depends on your level of education and experience. I would recommend anyone who wants to go into a biological field to go to grad school first and learn what things interest them. You can literally go into anything you want, but you need credentials and work experience to get there. Through grad school, you'll gain research and real world experiences / application that can carry you through to the next phase.
If you go into industry straight out of college with a bachelors in science, be prepared for a long sting of technician positions and bottom of the barrel jobs. From there you can work you way up, but it's much much harder than just going to grad school and gaining an education.