In an experimental situation, a student researcher inserts an mrna molecule into a eukaryotic cell after he has removed its 5' cap and poly-a tail. which of the following would you expect him to find? a. the molecule is digested by restriction enzymes in the nucleus. b. the molecule attaches to a ribosome and is translated, but more slowly. c. the cell recognizes the absence of the tail and polyadenylates the mrna. d. the molecule is digested by exonucleases since it is no longer protected at the 5' end. e. the mrna could not exit the nucleus to be transcribed.

The molecule is digested by exonucleases since it is no longer protected at the 5' end.

Explanation:

The 5′ cap protects the nascent mRNA from degradation and assists in ribosome binding during translation. If the 5' cap and poly A tail is removed, the mRNA transcript is exposed to the action of exonucleases.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.