<span>Some amino acids have multiple different codons that can code for them. So for some point mutations, one wrong nucleotide in a codon may still allow it to code for the same amino acid. For example. Serine has 4 different possible codons which can code for it. UCA, UCC, UCU, and UCG. Note that if the last letter were change in any instance, it would still code for serine. There are MANY other examples for this question; almost all amino acids have more than one codon which can code for it.</span>
<span>Living things are described as having 8 essential characteristics. Therefore, it must have organized cells, etc. But most importantly, it must be able to reproduce. The brain in unable to reproduce, as it is only part of a living organism. :) I hope this helps.</span>
Substances formed by joining smaller molecules together are called macromolecules. Examples for macromolecules are: carbohydrates, lipids, nucleic acids, and proteins. They are large biological molecules necessary for life: they power our cells and build our bodies.
I think that its A. acquiring energy
I hope this helps ^-^
(let me know if im wrong)
