Which is an active transport process? simple diffusion bulk filtration osmosis facilitated diffusion ion pump?

Ion pump. Active transport is molceules moving from low concentration to high concentration, requiring energy. Ion pump is in a process that uses the energy of an ion to move molecules against the gradient. Simple diffusion and facilitated diffusion are both passive transport. Bulk filtration would be endocytosis and exocytosis

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you