For Each of the Following Sentences, Fill in the Blanks

Essay

For each of the following sentences, fill in the blanks with the best word or phrase in the list below.Not all words or phrases will be used; use each word or phrase only once.
$\begin{array}{lll}\text { acetyltransferase } & \quad\quad\quad\quad\quad\quad\text { eukaryotic } & \text { operator } \\\text { centrosome } & \quad\quad\quad\quad\quad\quad\text { helicase } & \text { peroxidase } \\\text { deacetylase } &\quad\quad\quad\quad\quad\quad \text { heterochromatin } & \text { prokaryotic } \\\text { deoxidase } &\quad\quad\quad\quad\quad\quad \text { leucine zipper } & \text { telomere } \\\text { enhancer } &\quad\quad\quad\quad\quad\quad \text { Mediator } & \text { viral }\end{array}$
During transcription in __________ cells, transcription regulators that bind to DNA thousands of nucleotides away from a gene's promoter can affect a gene's transcription.The __________ is a complex of proteins that links distantly bound transcription regulators with the proteins bound closer to the transcription start site.Transcription activators can also interact with histone __________s, which alter chromatin by modifying lysines in the tail of histone proteins to allow greater accessibility to the underlying DNA.Gene repressor proteins can reduce the efficiency of transcription initiation by attracting histone __________s.Sometimes, many contiguous genes can become transcriptionally inactive as a result of chromatin remodeling, like the __________ found in interphase chromosomes.