give three reasons why red blood cells are good at carrying oxygen
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Explanation:
they have no nucleus so they can contain more haemoglobin.
they are small and flexible so that they can fit through narrow blood vessels.
they have a biconcave shape (flattened disc shape) to maximise their surface area for oxygen absorption.
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Answer:
they have no nucleus so they can contain more haemoglobin. they are small and flexible so that they can fit through narrow blood vessels. they have a biconcave shape (flattened disc shape) to maximise their surface area for oxygen absorption.
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