The diagram below represents the process that brings about blood clotting.

      

The diagram below represents the process that brings about blood clotting.
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a) Name the substances A and B.
b) Name one source of calcium ions in the diet.
c) Name one more other role of calcium in the body.
d) Name the blood cells that are involved in blood clotting.
e) List down three structural adaptations of the red blood cells to their functions.

  

Answers


sharon
a) A - Vitamin K
B - Thrombin
b) Milk/eggs
c) Formation of bones / teeth
d) Platelets
e) Biconcave disc to create a large surface area through which oxygen diffuses into the cell.
- No nucleus - creates more space for haemoglobin.
- Contain haemoglobin which has a high affinity for oxygen.
- Flexible cell membrane that enable them change their shape to squeeze through narrow capillaries.
sharon kalunda answered the question on September 18, 2019 at 08:19


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