Una pieza de roca áspera. I'm only guessing <span />
<span><span>d. amino acids
</span>The two factors that determine the shape of a protein </span><span><span>
1. </span> Primary structure. The sequence of amino acids. Amino acids are the building blocks of protein. It is a strong of linearity that can be thousands in length. Moreover, the formation of the amino acid and its system is influenced by its genes’ nucleotides arrangement. </span>
<span><span>2. </span>Hence the next factor is how is the structure of the amino acids bended and folded with itself that forms the certain protein molecule and forms the larger complex structure</span><span>
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All cells come from pre existing cells because if the cells never existed, then the cells could never be created. Cells multiply, from one another constantly forming from cells before them.