This is due in 5 min plzzz help

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

How does a catalyst influence a chemical reaction?