Worms don't have organs so im going with D
Answer:
Genetic engineering has been applied in numerous fields including research, medicine, industrial biotechnology and agriculture. In research GMOs are used to study gene function and expression through loss of function, gain of function, tracking and expression experiments.
Explanation:
Mitochondria are involved in cellular respiration, where they produce adenosine triphosphate (ATP). ATP is the cells energy carrier or the cells energy store molecule.