Multiple choice general knowledge

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

  1. 2.5 minutes

  2. 20 seconds

  3. 35 seconds

  4. 62 seconds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A red blood cell typically completes one full circulation through the entire human body in about 20 seconds. This rapid circulation ensures oxygen and nutrients are efficiently delivered throughout the body. The 2.5 minute and 62 second options are significantly longer than the actual circulation time.

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