1) What is the main function of red blood cells? a) Fight infection b) Carry oxygen c) Clot blood d) Digest food 2) Which of the following is NOT a component of blood? a) Plasma b) Red blood cells c) Lymphocytes d) Cartilage 3) What is the primary component of plasma? a) Water b) Protein c) Oxygen d) Hormones 4) Which of these cells are responsible for carrying oxygen in the blood? a) Platelets b) White blood cells c) Red blood cells d) Plasma cells 5) Platelets play an important role in... a) Oxygen transport b) Blood clotting c) Immune response d) Digestion 6) Which type of blood cell has a nucleus? a) Red blood cells b) Platelets c) White blood cells d) Plasma 7) Which component of blood is responsible for maintaining blood volume and pressure? a) Plasma b) Red blood cells c) Platelets d) White blood cells 8) White blood cells are primarily involved in... a) Oxygen transport b) Clotting blood c) Fighting infections d) Carrying nutrients 9) What does the term “plasma” refer to in the context of blood? a) The solid components of blood b) The liquid part of blood c) The white blood cells d) The cells that carry oxygen 10) What is the percentage of plasma in the blood? a) about 50% b) about 55% c) about 30% d) about 44% 11) What is the percentage of white blood cells and platelets in the blood? a) about 4% b) about 1% c) about 10% d) about 5% 12) What is the percentage of red blood cells in the blood? a) about 23% b) about 41% c) about 55% d) about 80%

Blood - 6th Grade

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