In an experimental situation, a student researcher inserts an mRNA molecule into the cytoplasm of a eukaryotic cell after she has removed its 5' cap and poly-A tail. Which of the following would you expect her to find?

a) The mRNA attaches to a ribosome and is translated, but more slowly.

b) The cell adds a new poly-A tail

c) The mRNA is quickly spliced into an mRNA containing a 5

The mRNA would most likely be degraded by nucleases in the cell cytoplasm

Explanation:

The 5'cap on an mRNA strand is necessary to bind ribosomes when the mRNA is being transcribed it also:

The poly-A tail helps to:

Without the cap and tail the mRNA is just a free ranging strand of nucleotides that the cell will try to clean up.

what school and grade?

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.