When a mitochondrial chaperone helps a mitochondrial matrix protein into the matrix by biased diffusion,the chaperone is said to be acting as a(n)______.
A)Brownian motion
B)biased diffuser
C)Brownian ratchet
D)misratchet
E)unbiased diffuser

Question

Quizplus · Accepted Answer

A Brownian ratchet is a mechanism that uses random thermal motion (Brownian motion) to move particles in only one direction. In this case, the mitochondrial chaperone is acting as a Brownian ratchet to transport the matrix protein across the mitochondrial membrane.

When a Mitochondrial Chaperone Helps a Mitochondrial Matrix Protein into the Matrix