Blood enters the pulmonary vein with close to 100% of the blinding site for oxygen saturated.
I think the answer is 90%. According to the recent National institute of Health, Microbes in the human body estimates that 90% of the cells in human body are bacterial, fungal, or otherwise non-human. Despite the arguments that bacteria enjoys a commensal relationship with the humans hosts, only a fraction of the human microbia has been characterized.
Active transport is the process that would be used to transport calcium ions through the calcium pump.
