<span>Radiochemical dating is the answer!</span>
<span>The right answer is: A
A) The molecule is digested by exonucleases because it is not protected at the 5' end. (correct)
B) The molecule is digested by restriction enzymes in the eukaryotic cell's nucleus. (false it is digested by exonucleases due to the absence of the 3'cap and the 5'tail)
C) The mRNA cannot exit the nucleus to be transcribed without the 5' cap and poly-A tail. (false, to be TRANSLATED and not to be transcribed)
D) The mRNA molecule attaches to a ribosome and is translated at a much slower rate. (false, it doesn't have a role to play in translation)</span>
Answer:
self sterile
Explanation:
the exact definition of self sterile is incapable of self-fertilization which means that has to be it
The simpliest answer is....the respiratory system gets oxygen and removes carbon dioxide.
---breathing describes the process of inhaling and exhaling air.the exchange of gases( oxygen and carbon dioxide)between living cells and the environment is a process known as respiration...
hope it helps my answer...