A child is born with a genetic mutation in which the plasminogen protein is absent in blood plasma. How will this affect hemostasis?
A. Blood clots will not be dissolved because plasminogen becomes a clot-dissolving substance.
B. Plasminogen activates Factor III to begin the extrinsic clotting mechanism, so clotting will be prevented.
C. Clotting will be prevented because plasminogen activates Hageman Factor to begin the intrinsic clotting mechanism.
D. Plasminogen causes platelets to adhere to collagen in the broken surfaces of blood vessels, so the platelet plug will not form.
Answer: A
You might also like to view...
The pyrimidines found in DNA are ________ and ________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. The terms innate immunity and nonspecific immunity refer to the same thing. 2. The main difference between active and passive immunity is where the immunity develops. 3. A main difference between natural and artificial immunity is how the body was exposed to the harmful agent. 4. The combining sites on an antibody are only exposed when it is attached to an antigen. 5. Adults can produce B lymphocytes in both the liver and red bone marrow.
What factors limit neurogenesis in the CNS of adults?
What will be an ideal response
Interferons are molecules that
A. have been used as drugs to help fight cancer. B. have been shown to increase the risk of cancer.