Prepare for the GED Science Test with our comprehensive quizzes. Study with flashcards and multiple-choice questions, each providing hints and explanations. Ensure your success on the GED Science Exam!

Practice this question and more.


What is the term for a hemoprotein composed of globin and heme that gives red blood cells their characteristic color?

  1. Hemophila

  2. Homogenize

  3. Homosapiens

  4. Hemoglobin

The correct answer is: Hemoglobin

The term for the hemoprotein that is made up of globin and heme, which gives red blood cells their characteristic red color, is hemoglobin. Hemoglobin is crucial for transporting oxygen from the lungs to other parts of the body and for carrying carbon dioxide back to the lungs to be exhaled. The heme portion of hemoglobin contains iron, which binds to oxygen, while the globin part is a protein that helps to form the overall structure. In contrast, the other terms listed do not relate to this context: hemophilia refers to a genetic disorder affecting blood clotting, homogenize pertains to blending substances uniformly, and Homo sapiens is the scientific name for modern humans. These distinctions underscore the specific role of hemoglobin in the circulatory system and its importance in maintaining oxygen levels in tissues.