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1. |
Which of the following statements is true concerning human blood?
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a) |
The blood of all normal humans contains red and white cells, platelets, and plasma.
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b) |
Some human populations normally lack the ability to produce plasma.
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c)
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Proteins are not normal components of human blood.
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| 2. |
Erythrocyte is another name for a:
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a)
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red cell
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b)
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white cell
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c)
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platelet
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| 3. |
Which of the following blood components provide the major defense for our bodies against invading bacteria and viruses?
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a)
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red cells
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b)
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white cells
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c)
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platelets
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| 4. |
The relatively clear liquid medium which carries the other cells of blood is called:
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a)
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lipid
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b)
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antibody
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c)
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plasma
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| 5. |
Which of the following are likely to increase in quantities when the body is under attack from bacteria?
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a)
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erythrocytes
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b)
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leukocytes
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c)
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thrombocytes
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| 6. |
When blood clumps or forms visible islands in the still liquid plasma, it is called:
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a)
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clotting
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b)
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agglutination
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c)
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none of the above
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| 7. |
Antigens are:
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a)
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found on the surface of red cells
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b)
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kinds of red cells that identify a blood type
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c)
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relatively large carbohydrate molecules
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d)
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a and b
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| 8. |
Which of the following statements is true of antigen-antibody interactions?
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a)
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They are used by our bodies only to identify blood types.
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b)
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They are used to identify and reject microorganisms, such as viruses and bacteria, that invade our bodies.
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c)
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They are the way our blood clots when we are bleeding from an open wound.
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d)
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b and c
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| 9. |
Most of the volume of normal human blood is composed of:
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a)
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red cells
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b)
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hemoglobin
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c)
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plasma
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d)
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white cells
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