The palisade mesophyll has long cylinder shaped cells, lots of chloroplasts, cells closely packed together and large size of cells.
Option three should be correct
Nothing really big... It floats because of density not surface tension.
But You can try and discover what will happen. :)
( P.S if you'll drop soapstone it will probably create nice waves... )
The RNA codon will be GAU, pairing Cytosine-Thymine-Adenine DNA codon with Guanine-Adenine-Uracil RNA codon. This codon is the Amino Acid, Aspartic Acid. In this codon we see Uracil which is the counterpart of Thymine in the RNA.