What is the role of the helicase enzyme in dna replication? a) it breaks apart the bases b) it adds nucleotide to the chain c) it checks the dna for errors d) it ties the chunks of dna together me with this question asap

Explain nonnuclear inheritance. ~ ap biology

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

Which beat describes the brain stem