Is as are typically which typically which type of biomolecules

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

When energy is used, atp molecules convert to adp molecules. this process is called

Original sequence mrna: cag gga gca uua mutated sequence mrna: cag uga gca uua using the amino acid codon chart, what will happen to this protein sequence if the mutation shown occurs?