13. Differences between DNA and RNA Shorter; Present in nucleus and cytoplasm; Short term; Some bases paired and some unpaired Longer; Only found in the nucleus; Long lasting; Many bases are paired RNA DNA
18. tRNA ‘clover leaf’ shape ; (allow reference to loop / folded structure) tRNA standard length ; tRNA has an amino acid binding site ; tRNA has anticodon available / three exposed bases ; tRNA has hydrogen bonds (between base pairs) ;