Q1:-how is a red blood cell adapted to function efficiently?
Q2:-how are capillaries adapted for performing their functions efficiently?
Q3:-state any 3 differences between an artery and a vein.
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- Answer:Red blood cells have adaptations that make them suitable for this: they contain haemoglobin - a red protein that combines with oxygen. they have no nucleus so they can contain more haemoglobin. ... they have a biconcave shape (flattened disc shape) to maximise their surface area for oxygen absorption.
- Capillaries are the site at which exchange of oxygen, carbon dioxide and nutrients takes place. The structure of capillaries makes them very well suited for this function. As capillaries are only one cell thick and have very thin permeable walls this means that substances can diffuse out of them very easily.
- The chief difference between arteries and veins is the job that they do. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart. Your body also contains other, smaller blood vessels.
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Answer: Why, wanna copy and paste on your assignment!
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