The picture represents the respiratory system which structure is represented by the x? the pharynx the lar

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes