In messenger rna, each codon specifies a particular a. nucleotide b. purine c. amino acids d. pyrimidine

i think the answer would be a. after sentence 14! i hope i at least a little

while the heads of the phospholipid structure attract water, the tails are hydrophobic. the model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.