During molecules like glucose, use a protein channel to enter or leave the cell.

Facilitated diffusion.

Explanation:

The diffusion may be defined as the movement of the solute particles from the region of the higher concentration towards the lower concentration. The ATP is not required in the diffusion process.

Facilitated diffusion is a type of diffusion in which molecules move along the concentration gradient by the use of protein molecules. The integral membrane proteins forms pores or channels that allow the movement of particles through these pores.

Thus, the answer is facilitated diffusion.

for the points

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.