Answer:
to take precise measurements and do experiments
Isn't it the cell membrane? The cell membrane controls what goes in and out of the cell using active and passive transport. Osmosis being a part of passive transport.
A forensic scientist must have a minimum of a bachelor’s degree. Although a degree in natural science or forensic science is recommended, some crime scene investigators begin as police officers and lean on their work experience to move into the investigator position. They might hold an associate degree or certificate.
Its "changes occur in the organism" answer