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Category: Science and Technology

Date Submitted: 09/20/2012 12:29 PM

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Question 1: In what ways do normal red and white blood cells differ?

They have very different jobs. Red blood cells travel around the body to deliver oxygen and nutrients to the cells that need them, and they also take back what the cell doesn't need.

White blood cells help to fight and consume bacteria, viruses and anything else that attacks the body.

Question 2: Which type of white blood cell would you expect to be most common in a normal blood smear?


Question 3: A differential count of white blood cells from a patient gave the absolute number of lymphocytes as 8000 per mm3 and the total number of white blood cells as 12,000 per mm3. Calculate the percentage of lymphocytes in this sample of white blood cells. Is this a normal or abnormal percentage? Explain your answer.

The answer is 66%. It is not normal because the normal percentage is 15-40%. Increased lymphocytes are over 4500 per mm3. So in this case it is not normal. It is too high.

Question 4: Describe the difference between a communicable disease and an inherited disease. Use examples you have studied in this exploration to support your description.

A communicable disease is an infectious disease that can be transmitted from one individual to another. An inherited disease is a disease passed through genetics. An example of a communicable disease is mononucleosis, which can be transmitted through an infected person’s saliva with a clean person’s saliva. An example of an inherited disease is sickle-cell anemia.