The oxygen atoms i believe is the answer
4. Gene Pool is not a mechanism, thus your answer!
<span>Culturing unknown organisms, if this is the same as these answers:
</span>a. human insulin production by bacterial cells
<span>b. hepatities B vaccine production using yeast cells </span>
<span>c. insertion of genes from humans or plants into bacteria or viruses </span>
<span>d. culturing unknown organisms </span>
<span>e. amplification of DNA for microbe identification</span>
