Red blood cells are shaped like smooth discs that allow them to flow easily through arteries and veins. what does this illustrate?
question 1 options:
a)
homeostasis
b)
structure and function relationship
c)
chemosynthesis

B) Structure and function relationship

Red blood cells are round, with a flat indented center without a hole. It carries oxygen and remove carbon dioxide from the body.

Red blood cells are disc shaped because they have more membrane than needed to hold the volume, so it is like a balloon that is flattened. This makes them more flexible and allow them to squeeze more easily through the capillaries. Therefore, it shows structural and functional relationship.

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