Step-by-step explanation:
required for cellular respiration: Oxygennet diffusion from alveoli to lung capillaries: Oxygenenters alveoli during inhalation: Oxygentransported by hemoglobin: Oxygensometimes transported as bicarbonate: Carbon dioxidenet diffusion from body tissues to blood: Carbon dioxidenet diffusion from lung capillaries to alveoli: Carbon dioxidewaste product of cellular respiration: Carbon dioxide