Which prevents the lac genes in the dna of e. coli from being expressed most of the time

How does natural selection change thephenotypes within a population over time?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

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?