Antibodies attach to mast cells via their:
A. antigen-binding region
B. constant region
C. MHC region
Answer: B. constant region
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An organism has inherited a mutation that causes a loss of follicles. What do you predict would be the effect in this individual?
A. The organism would lack feathers or hair. B. The organism would lack the lateral line system C. The organism would lack mesoderm. D. The organism would lack skin glands.
Explain the cohesion-tension theory. What will be an ideal response?
What level of ecology is concerned with the adaptations of individuals?
A) community B) organismal C) ecosystem D) population
The genome of which of the following types of animal virus can act directly as mRNA?
A) retroviruses B) +ssRNA viruses C) -ssRNA viruses D) ssDNA viruses E) dsRNA viruses