Exam 12: Control of Gene Expression

What experimental evidence suggests that the N-terminal tails of histones participate in the formation of higher-order chromatin structure?

Transcription factors bound at the enhancer stimulate the initiation of transcription at the core promoter through the action of intermediaries called _____.

Why might localizing mRNAs in the oocyte be more efficient than localizing the proteins they encode?

What two monosaccharides combine to form lactose?

What is probably the single most important distinction between prokaryotes and eukaryotes?

Which transcription factor helps to activate genes needed for cell division?

When present,the TATA,CAAT and GC boxes are typically found within 100 - 150 bp upstream from the transcription start site.Due to their closeness to the start of gene,they are often called ______.

What happens to membrane proteins that have been attached to a single ubiquitin molecule?

A section of a bacterial chromosome in which genes for the enzymes of a particular metabolic pathway are clustered together in a functional complex under coordinate control is called a(n)______.

What is the name of the site where RNA polymerase binds to the DNA prior to the beginning of transcription?

What is thought to maintain X chromosome inactivation?

Deadenylation,decapping and 5' -> 3' degradation occur within small,transient cytoplasmic granules called _________.

A specific internal sequence of amino acids that ensures that the protein containing it will not survive long within the cell is called a(n)_______.

The lac operon is an example of a(n)_______ operon.

The type of control exercised if the interaction of a regulatory protein and DNA inhibits transcription.

Compare the functions of two filamentous protein structures,the nuclear lamins (intermediate filaments)and the FG repeat domains of nucleoporins.