Mainly sodium and
potassium. Though chloride and calcium are also used in special circumstances. In
the normal resting potential, the cell must bail out sodium ions that leak in
and recapture potassium ions that leak out remains stable because the ionic
concentration gradients are maintained.
Answer:
c. Some codons specify the same amino acid.
Explanation:
Codons are triplets of nucleotides in mRNA that is used for the protein synthesis (translation). A codon specifies a single amino acid, but there are exceptions. tRNA molecule contain anticodons, triplets of nucleotides that are complementary to codons. So, during the translation, tRNA carries the amino acid, that corresponds to the codon in mRNA.
The answer is : They are distantly related so their development is similar. They have different genetic materials.