A patient with leukemia has blood cells that are not dividing properly and are out of control. Treatment consists of a bone marrow transplant. How would this help?
What will be an ideal response?
The improperly dividing cells must be destroyed, or they will continue to cause problems. The only way to ensure that all of the leukemia cells are removed is to destroy all of the blood cells. Then a new supply of functioning blood cells has to be implanted to restore the blood cell population. Since the stem cells in the bone marrow give rise to all forms of blood cells, the transplant would replace the defective cells.
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A mutation in which the fate of cell lineages is not synchronized in an organism is called a ____
A. heterochronic mutation B. apoptotic mutation C. homeotic mutation D. homeobox mutation
What would you predict would happen in an area of the body where blood was relatively acidic (low pH)?
a. O2 would bind more readily to hemoglobin. b. CO2 would bind more readily to hemoglobin. c. O2 would release from hemoglobin. d. CO2 would release from hemoglobin. e. Binding of O2 by hemoglobin would cease.
To which subtype of muscle tissue does a fiber with cross-striations and many peripherally located nuclei belong?
a. skeletal. b. cardiac. c. smooth. d. none of the above.
Which of the following statements is false?
a. Endotherms have a higher metabolic rate than ectotherms. b. Endotherms can regulate their temperature through behavior. c. Ectotherms regulate their temperatures through behavior. d. Heterotherms may function as either an ectotherm or an endotherm. e. Ectotherms do better in cold climates.