ScienceCâu 74 / 120
What is the main function of red blood cells?
a.Fight infection
b.Form blood clots
c.Produce antibodies
d.Carry oxygen
Giải thích
Red blood cells contain hemoglobin, which binds and transports oxygen from the lungs to the body's tissues. White blood cells fight infection and platelets help form clots.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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