Multiple choice general knowledge

It takes about ............... for a red blood cell to circle the whole body.

  1. 2 Hours

  2. 20 Minutes

  3. 2 Minutes

  4. 20 seconds
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Red blood cells circulate through the entire body in approximately 20 seconds, traveling through arteries, capillaries, and veins to deliver oxygen. This rapid circulation allows efficient oxygen transport to all tissues. The other timeframes (2 minutes, 20 minutes, 2 hours) are significantly longer than actual circulation time.

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