The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called

Active transport

Explanation:

because it refers to the process where in the molecules are traveling through the membrane from a lower concentration region to a high concentration region.

I hope this help! :)

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

the endomembrane system i think