what type of transport is usually happening when oxygen is absorbed into cells?

Oxygen is absorbed into cells mainly by diffusion , a type of passive transport.

Quick Scoop: What’s Going On?

• Oxygen in the blood is at a higher concentration than inside body cells.
• Because of this difference, oxygen molecules move down their concentration gradient from the blood into cells.
• This does not require energy (ATP), so it is called passive transport , specifically simple diffusion across cell membranes.

So, when oxygen is absorbed into cells from the bloodstream, the usual type of transport is simple diffusion (passive transport).