1. Hemoglobin is the molecule that floats around in blood and carries oxygen mol

Question

1. Hemoglobin is the molecule that floats around in blood and carries oxygen molecules to the tissues in your body.

True or false: Oxygen binds to the iron in the hemoglobin molecule.

Select one:

True

False

2. Hemolytic disease of the newborn can happen during a woman's first pregnancy where the mother is Rh- and the fetus is Rh+.

Select one:

True

False

3. Leukemia is cancer of the white blood cell. It is the result of an abnormal white blood cell multiplying uncontrollably. Why is it so letal? Because it takes over the red bone marrow and doesn't allow normal red blood cells, white blood cells and platelets to form.  

True or false:

Without enough red blood cells, you can't bring oxygen to the tissues in your body.

Without enough platelets, you won't be able to form clots, for instance, to stop you from bleeding when you get a cut.

Without enough normal white blood cells, you cannot fight infections properly.

Select one:

True

False

4. The neutrophil is the first white blood cell to arrive at the site of an infection.

Select one:

True

False

5. Blood clots serve to stop a person from bleeding, for instance, when they get a cut (a blood vessel is broken open). When a blood clot forms in an unbroken blood vessel, it is called an embolus; when the embolus breaks free from the wall of that blood vessel, it is called a thrombus.

Select one:

True

False

Explanation / Answer

1. True.

Iron is the site of oxygen binding in haemoglobin

2. False

Rh sensitization is very rare in first pregnancy. Enough antibodies are not made to cross the placenta and harm the baby. It usually occurs during a future pregnancy where the mother is carrying an Rh+ baby as the mother's cells had already encountered a similar condition during first pregnancy. This causes the sensitization and antibodies made can cross the placenta.

3. False

It interferes with the process of formation of normal white blood cells due to which the infection fighting ability of body is decreased.

False

Anemia develops if enough erythrocytes are not present.

False

The blood clot forms but the process of clotting is slowed

True

white blood cells are vital in protection against infections

4. True

Neutrophils arrive at the site of infection earliest

5. False

Blood clot formed in unbroken blood vessel is thrombus while blood clot which freely moves in blood is embolus.

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