Question

Using RNA as a template for protein synthesis instead of translating proteins directly from the DNA is advantageous for the cell because

a.RNA is much more stable than DNA
b.RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a permanent, pristine repository of the genetic material
c.many mRNA molecules can be transcribed from a single gene, increasing the potential rate of gene expression
d.B and C only
e.A, B, and C

Answer 1

RNA serves as an expendable template for protein synthesis that protects DNA integrity and allows for quicker and more robust protein production. The correct multiple-choice option explaining these benefits is 'd. B and C only'.

Step-by-step explanation:

The use of RNA as a template for protein synthesis instead of directly using DNA is beneficial for several key reasons. Using RNA helps to protect the integrity of the DNA. Messenger RNA (mRNA) acts as an expendable copy, which prevents the need for the original DNA to leave the safety of the nucleus. Additionally, multiple mRNA copies can be made from a single gene, allowing for the possibility of synthesizing large amounts of a protein quickly if needed. This system effectively amplifies the gene expression process.

It is important to note that RNA is not more stable than DNA; in fact, it is quite the opposite. mRNA is less stable, which is actually an advantage because it means that mRNA will only exist while needed, and then it will be degraded, ensuring tight regulation of protein synthesis.

Therefore, the correct answer to the question is 'd. B and C only,' which indicates that the advantages of using RNA are due to it being an expendable copy that allows for greater gene expression rates.