1) Of how many parts blood is made up of? a) Two b) Five c) Three d) Four 2) A persons blood is either “positive” or “negative”. a) True b) False 3) How many blood types exist? a) Eight b) Five c) Six d) Nine 4) Cells can be black or white a) True b) False 5) Arteries carry carbon dioxide from the heart to the rest of the body a) True b) False

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