Precursor metabolites are
a. always amino acids
b. always sugars
c. catabolites that are useful for anabolism
d. anabolites that are useful for catabolism

Where are the following

Plants take energy from the sunlight with the of chlorophyll so the plant starts the food chain. then an herbivore eats the plant and gets its energy.then a carnivore or a human eats the herbivore and gets its energy. : )

Hello therethe ability of a muscle to produce prolonged effort is muscle answer: the ability of a muscle to produce prolonged effort is muscle  flexibility