Why is active transport unique compared to all other types of transport?

while active transport requires energy and work, passive transport does not. there are several different types of this easy movement of molecules. since the cell membrane will not allow glucose to cross by diffusion, are needed.

it is a learned trait

explanation:

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.