Which of the following describes the characteristics of bacterial UP elements?
◦ Interact with the α subunits of RNA polymerase to bind promoters for genes that are moderately expressed
◦ Interact with the α subunits of RNA polymerase to bind promoters for genes that are highly expressed
◦ Interact with the σ subunit of RNA polymerase to bind promoters for genes that are moderately expressed
◦ Interact with the σ subunit of RNA polymerase to bind promoters for genes that are highly expressed
◦ Interact with the β subunit of RNA polymerase to bind promoters for genes that are moderately expressed