Which statement about blood composition is most accurate?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

Which statement about blood composition is most accurate?

Explanation:
Blood is a mixture of a liquid phase called plasma and solid components—the formed elements. The formed elements include red blood cells, white blood cells, and platelets, all suspended in the plasma. Plasma itself is a water-based solution that carries proteins (like antibodies), nutrients, and other substances. So describing blood as liquid plasma plus the three types of cells captures its actual composition, making that option the most accurate. The other statements miss the presence of formed elements or antibodies or mischaracterize blood as lacking solids or being composed only of plasma.

Blood is a mixture of a liquid phase called plasma and solid components—the formed elements. The formed elements include red blood cells, white blood cells, and platelets, all suspended in the plasma. Plasma itself is a water-based solution that carries proteins (like antibodies), nutrients, and other substances. So describing blood as liquid plasma plus the three types of cells captures its actual composition, making that option the most accurate. The other statements miss the presence of formed elements or antibodies or mischaracterize blood as lacking solids or being composed only of plasma.

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