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ASVAB · Biology and Life Science

Which blood cells are primarily responsible for fighting infection?

Correct answer

White blood cells

  1. A Red blood cells
  2. B White blood cells
  3. C Platelets
  4. D Plasma

Why this is the answer

WHITE BLOOD CELLS (leukocytes) are primarily responsible for FIGHTING INFECTION as part of the immune system. ASVAB General Science covers the circulatory/immune system. Blood components: RED BLOOD CELLS (carry oxygen via hemoglobin); WHITE BLOOD CELLS (fight infection/immunity); PLATELETS (help blood clot); PLASMA (the liquid that carries cells and nutrients). Knowing the function of each blood component — especially white blood cells fighting infection — is commonly tested.
Source: ASVAB General Science — Blood Components

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