Cells control gene expression by using molecular tags that lure an enzyme to insure the transcription of certain genes. they also use tags that repel the same enzyme for genes that are turned off. the enzyme that controls the transcription is

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

What enzyme is most important for dna replication and why?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?