What carries the instructions for protein synthesis from the dna molecule located in the nucleus of a cell into the cytoplasm?

What are the two main phases of a cell cycle

Which material is commonly used as a culture medium for living cells

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?