Does active transport require a cell membrane?

Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?

What do transitional fossils best support?

The wind speed in the region between cities a and b was probably the greatest at noon on which day?