A bacterial does not need to produce a particular enzyme for a metabolic pathway. The DNA is blocked with a protein that inhibits the production of mRNA. This is gene expression at ___________.

If the ___________ does not open, _________ cannot proceed.

p53 is a tumor suppressor gene which binds to the promoter site of a gene. The p53 protein acts at the ___________ level.

Multiple copies of a polypeptide can be translated using a _______________. 

If glucose is absent, but lactose is present, the lac operon will be ____________.

A newborn’s telomeres are _______ an octogenarian’s (senior’s) telomeres.

The _________ will increase the stability of the mRNA molecule as it exists the nucleus.

Which of the following statements is TRUE regarding both prokaryotic and eukaryotic transcription?

The ___________ serve as the adaptor molecules between the mRNA template and the growing polypeptide chain, and are synthesized by ____________ in the nucleus.

The core enzyme in prokaryotic cells is missing which of the following subunits?