The answer should be b: active transport
Monomers bind chemically to other molecules to form polymers
Active transport.
Passive transport, being its opposite, requires no energy at all. Therefore, active transport would require energy or ATP in order to move across.
Hope this helps!
Head,Thorax,abdomen and six legs
Kingdom, phylum, class, order, family, genus, and species is the classification chart levels in order from most broad to least.
