An electron microscope would be used if a sample needed to appear lighter a sample was too small to be seen with an optical microscope details of cell structures needed to be distinguished

Hold on to his or her beliefs even if there is no evidence for those beliefs.

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil. 

A) the sequence of bases would halt the production of any proteins.