Which of the following is a way red blood cells are specialised for their function?

AThey contain numerous mitochondria to produce energy for swimming

BThey have a thick muscular wall to withstand high pressure

CThey have no nucleus, leaving more space to carry haemoglobin

DThey have a large permanent vacuole to store food

Explanation

Red blood cells lack a nucleus, leaving more space for haemoglobin.

Derived from ZIMSEC Biology 4025/2 Paper 2 Theory, November 2018, Q1

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