Isothermal micro-calorimetry and seed ageing where a sample is respiring, the gas around the sample may become exhausted of oxygen, resulting in a sudden decrease in heat flow.
They pointed out that respiration, in contrast to fermentation, is such a high-yield strategy that provides a strong fitness advantage to a cluster of respiring organisms.
Oxygen free radicals are powerful metabolic products formed as a consequence of aerobic life to which all respiring organisms have adapted to with relative short-term success.
Instead of respiring with oxygen, it respires using the most oxidized form of arsenic, arsenate.
Oxygen is required by all aerobically respiring plants and animals and it is replenished in daylight by photosynthesizing plants and algae.
This unique feature allows them to remain in places without access to the air, respiring through their skins.
Finally, the gills are exposed to the outside, allowing the fish to continue respiring while slowly swallowing large prey.
Air enters the trachea through valves known as spiracles and diffusion can then occur straight into the respiring tissues.
