Multiple choice general knowledge science & technology

blood consists of is composed of blood cells suspended in a liquid called blood plasma. Plasma contains 90% water. how much plasma is there in blood?

  1. 40%

  2. 55%

  3. 70%

  4. 30%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood composition is approximately 55% plasma and 45% blood cells (red blood cells, white blood cells, and platelets). Since plasma is 90% water, and plasma makes up 55% of blood, water constitutes roughly 50% of total blood volume. The 55% figure represents the plasma fraction itself.

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