A codon consists of _____ bases and specifies which _____ will be inserted into the polypeptide chain.

three; amino acid

Where does RNA polymerase begin transcribing a gene into mRNA?

It starts after a certain nucleotide sequence called a promoter.

What is the function of RNA polymerase?

It unwinds the double helix and adds nucleotides to a growing strand of RNA.

A ribozyme is a biological catalyst made of RNA.

True

How is translation initiated?

All of the above.