Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?

Each cell's membrane contains the right mix of structures to help that cell keep its internal environment just ... Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.

where are the choice's ??!!

Active Transport Apex

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )