Monomers of Nucleic Acids? Watch
oh also, on an unrelated note during exercise does the heart pump more blood or the same amount of blood just more rigorously? I'm confused as im pretty sure RBCs take 3 weeks to mature - and I'm not sure how they can spontaneously be made during high conditions of metabolic activity... Many thanks!
The same amount of blood is pumped more rigorously via increased heart rate when exercising. This results in the haemoglobin in red blood cells being able to become oxygenated at a faster rate as they are pumped through the pulmonary artery. As you said, red blood cell generation (erythropoiesis) takes weeks.
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