I think both of them are positive feedback
Answer:
mitochondria produces energy in the form of ATP molecules
As in Plant ; Meristematic cells have high no of mitochondria as they have to duvide continuously!!
and in animal as for example , take a liver cell , they have high number of smooth endoplamic reticulum as they have to detoxify toxic materials !!
for more info; comment !!
Characterzied by destructive metabolic exergonic reactions
