) After decades of work a scientist isolated a small amount of attractase, an enzyme producing a powerful human pheromone. To produce attractase for his personal use in large quantities, he obtained a complete genomic clone of the attractase gene, connected it to a strong bacterial promoter on an expression plasmid into E. coli cells. He was devastated to find out that no attractase was produced in the cells. What is a likely explanation for the failure

A complete eukaryotic gene was used into the bacteria genome

Explanation:

The atractase gene is an eukaryotic gene, which means that is composed of a  promoter, introns and exons. When the gene was connected to a strong bacterial promoter only the exons should be used in order to promote the correct translation of the enzyme.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.