Beta Beta Beta, also known as Tri-Beta, is a national honor society dedicated to improving the understanding and appreciation of the biological sciences. Tri-Beta strives to extend the bounds of human knowledge through scientific research. Since its founding in 1922, more than 145,000 people have been accepted into lifetime membership, and more than 380 chapters have been established throughout the United States and Puerto Rico.

Truman State University's Tri-Beta Chapter (Psi Zeta Chapter) holds the distinction of being one of the largest academic student organizations on campus. Also as more than one of the most active organizations, Tri-Beta offers tutoring for biology classes, research lab opportunities, networking events for its members, bi-weekly meetings, biology course reviews, service activities for both the University and community, and numerous other activities throughout the academic year. Our chapter is paried with the National Marrow Donor Program, formerly known as Be the Match.