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4 Written questions

3 Multiple choice questions

  1. discovered why blood transfusions didn't always work; he found that blood is not all the same and that there are several types of blood
  2. carry oxygen to all parts of the body; concave on both sides so they can easily squeeze through the capillaries
  3. help fight disease and infection

3 True/False questions

  1. not all blood types can be...A, B, AB, and O


  2. blood transfusionpeople who donate blood


  3. plateletsthe liquid part of blood; dissolves proteins, sugars, and nutrients