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Practice: Components of the Blood

The diagram given shows multiple, normal red blood cells in a blood vessel.

What scientific term best describes the shape of a mature red blood cell?

  • ABiconcave
  • BBiconvex
  • CConvex
  • DCircular

Why does a red blood cell have this shape?

  • ATo increase the available surface area, so more oxygen can diffuse in and out of the cell
  • BTo increase the volume of the cell, so more genetic material can be carried around the body
  • CTo decrease the surface area, therefore restricting the volume of oxygen lost from the cell
  • DTo provide a large surface area for the active transport of oxygen in and out of the cell

Correct Answer

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