Which of the following is a reason that knowledge of microbial metabolism is useful to humans?
a. many bacterial products are commercially or medically important.
b. bacteria can be useful in the production of foods such as yogurt and cheese.
c. waste products produced by bacteria can be useful in bacterial identification.
d. studying microbial metabolism has been useful in helping to understand similar pathways in eukaryotes.
e. all of these choices are correct?
