Which term denotes an experiment performed in a test tube or controlled environment outside a living organism?

Which term denotes an experiment performed in a test tube or controlled environment outside a living organism?

• A. Ex Vivo
• B. In Vitro
• C. In Vivo
• D. OSHA

Answer: (B)

Testing something in a controlled lab setting outside a living organism is described as in vitro. The term literally means “in glass,” referring to experiments done in test tubes, petri dishes, or culture media rather than inside a body. This contrasts with in vivo, which means inside a living organism, and ex vivo, which uses tissues or cells taken from an organism but studied outside the body while retaining some natural context. In vitro studies allow precise control of variables and conditions, such as biochemical reactions or cultured cells, without the complexities of a whole organism. OSHA is unrelated to this concept, as it denotes workplace safety standards.

Testing something in a controlled lab setting outside a living organism is described as in vitro. The term literally means “in glass,” referring to experiments done in test tubes, petri dishes, or culture media rather than inside a body. This contrasts with in vivo, which means inside a living organism, and ex vivo, which uses tissues or cells taken from an organism but studied outside the body while retaining some natural context. In vitro studies allow precise control of variables and conditions, such as biochemical reactions or cultured cells, without the complexities of a whole organism. OSHA is unrelated to this concept, as it denotes workplace safety standards.