RNAs do ALL of the following in the cell EXCEPT:

A) Carry coded messages from the nucleus to the ribosome

B) Carry amino acids to the ribosome

C) Make up a portion of the ribosome

D) Hold the cell membrane together

Option D) Hold the cell membrane together

Explanation:

RNA also known as ribonucleic acid plays vital role in protein synthesis. It is divided into:

- mRNA used in carry coded messages from the nucleus to the ribosome

- rRNA (ribosomal RNA) that make up a portion of the ribosome, and provide site for protein synthesis.

- tRNA (transfer RNA) that Carry amino acids to the ribosome

Thus, since the RNA is found inside the nucleus, it is not responsible for holding the cell membrane together.