Reply To: What is pump and carrier? Share this post: Share on Twitter Share on Facebook Share on LinkedIn Share on Email Share on WhatsApp Share on Telegram October 20, 2020 at 6:36 am #2189 harpreet kaurParticipant It is a protein which are actively import or export of particles from low conc.to high conc. Share this post: Share on Twitter Share on Facebook Share on LinkedIn Share on Email Share on WhatsApp Share on Telegram