1) What is the yellow liquid in blood called? a) Red blood cells b) White blood cells c) Plasma 2) What do the red blood cells carry? a) water b) oxygen c) food 3) What is the job of the white blood cells? a) Fight disease b) Clot blood c) Carry oxygen 4) What makes our blood clot? a) White blood cells b) Platelets c) Plasma 5) Where does blood pick up oxygen? a) Heart b) Guts c) Lungs 6) Which blood cells have no nucleus (brain)? a) Platelets b) Red blood cells c) White blood cells 7) How long do red blood cells live? a) 120 days b) 21 days c) 4 hours 8) How much of our blood is made of cells? a) 90% b) 20% c) 45%

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