ASVAB · Biology and Life Science

Which blood type is the universal donor for red blood cells?

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Correct answer

O negative

A O negative
B B negative
C AB positive
D A positive

Why this is the answer

O negative is the universal donor for red blood cells — it lacks A, B, and Rh antigens, making it compatible with all blood types.

Source: ASVAB GS, Biology, Blood Types

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About this topic: Biology and Life Science

Biology questions cover cells and their organelles, genetics and heredity, classification, photosynthesis and respiration, and ecosystems. These are recall questions — know the vocabulary and the function of each structure. This is one of 15 General Science questions on biology and life science, each with a full explanation on a single study page.

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Which blood type is the universal donor for red blood cells?

Why this is the answer

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About this topic: Biology and Life Science

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