GED Science Practice

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What term refers to a blood group antigen possessed by Rh-positive people?

Relative Humidity
Rotating Crops
Rust
Rh factor

The correct answer is: Rh factor

The correct term that refers to a blood group antigen possessed by Rh-positive people is known as the Rh factor. The Rh factor is a specific protein that may be present on the surface of red blood cells. If an individual has this protein, they are categorized as Rh-positive. This classification is essential in blood typing and transfusions, as mismatches can lead to serious medical complications. The other terms such as relative humidity, rotating crops, and rust are unrelated to blood group antigens. Relative humidity pertains to the amount of moisture in the air, rotating crops is an agricultural practice aimed at improving soil health and preventing erosion, and rust refers to the corrosion of iron due to oxidation. None of these concepts are relevant to the context of blood groups and the Rh factor.