A person who produces anti-A and anti-B serum antibodies will have blood type ________.
A. B
B. O
C. AB
D. A
E. Rh
Answer: B
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Infections caused by Staphylococcus aureus include all of the following except ________.
A. scalded skin syndrome B. impetigo C. meningitis D. chickenpox E. carbuncles
Erythropoietin, a hormone that stimulates stem cells in bone marrow to increase erythrocyte
production, is produced in the
a. bone marrow. b. heart. c. kidneys. d. liver. e. lymph nodes.
Social dominance can serve to
A) increase competition. B) increase the number of mating pairs. C) limit population size. D) decrease the survival rate of a pack.
The organisms that cause ringworm, or tinea, use keratin protein as their growth substrate. This is why these infections
A. have a high mortality rate. B. cause a discoloration of the skin by damaging skin pigment protein. C. produce a rash all over the body during an infection. D. are restricted to superficial skin layers.