Question

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

1) RNA is much more stable than DNA
2) RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a permanent, pristine repository of the genetic material
3) many mRNA molecules can be transcribed from a single gene, increasing the potential rate of gene expression
4) B and C only
5) A, B, and C

Answer 1

Using RNA as a template for protein synthesis is advantageous because RNA serves as a temporary copy of the genetic material, allowing DNA to remain intact and less prone to damage. Additionally, multiple mRNA molecules can be transcribed from a single gene, increasing the rate of gene expression. Moreover, RNA is relatively unstable, enabling a more dynamic regulation of gene expression.

Step-by-step explanation:

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

1. RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a permanent, pristine repository of the genetic material. DNA is the master copy of genetic information and is relatively stable. By using RNA as a temporary copy, the cell can avoid potential damage to the DNA.
2. Many mRNA molecules can be transcribed from a single gene, increasing the potential rate of gene expression. This means that multiple proteins can be produced from a single gene simultaneously, allowing for faster and more efficient protein synthesis.
3. RNA is relatively unstable and short-lived in the cell, especially in prokaryotic cells, ensuring that proteins are only made when needed. This allows for a more dynamic and responsive regulation of gene expression.