Which of the following enzymes is involved with breaking hydrogen bonds
a. DNA polymerase
b. DNA ligase
c. DNA helices
d. both a and b
Answer: C
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Biology Chapter 10
- Anemias appearing in old age result from all of the following EXCEPT:
- Compatibility testing for agglutination of donor RBCs by the recipients' serum is called:
- Which of these blood types carries no antigens:
- The immune serum used to prevent maternal sensitization to Rh antigens is:
- Which blood type(s) can a person with blood type O receive:
- ABO blood groups are based on the presence of:
- The universal recipient has blood type:
- The most common type of blood in the U.S. population is:
- Which antigen(s) does type AB blood contain:
- The process whereby the binding of antibodies to antigens causes RBCs to clump is called:
- A substance that stimulates the immune system to release antibodies:
- Severe shock occurs with blood loss of:
- Treatment of hemophilia often involves:
- The organ largely responsible for the synthesis of clotting factors is the:
- The ion essential for blood clotting is:
- Bleeding disorders often result from a lack of which one of the following vitamins:
- Which of the following is a blood clotting disorder:
- A clot that breaks away from a vessel wall and circulates freely within the bloodstream is called a(n):
- A __________ clot is formed during the process of hemostasis.
- Prothrombin activator coverts prothrombin to:
- Blood normally clots in approximately:
- Which chemical is released to bring about vasoconstriction during the vascular spasm phase of hemostasis:
- Which one of the following represents the proper sequence of hemostasis:
- The series of reactions that stop blood flow following a cut is called:
- Megakaryocytes pinch off anucleate fragments called: