Multiple choice general knowledge science & technology

Blood is filtered by which organ?

  1. Brain

  2. Intestines

  3. Nose

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

The kidneys filter blood, removing waste products and excess substances to produce urine. Each kidney contains about a million nephrons that perform this filtration. The brain controls bodily functions, intestines digest food, and the nose is for breathing and smell.

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