If the concentration of a ligand is 100 times greater than the Kd of its receptor, _______ of the receptors will be bound to a ligand.
A. few
B. none
C. most
D. half
C. most
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Quantitative traits
A. are polygenic. B. encode genes for continuous traits. C. are influenced by the environment. D. are polygenic and are influenced by the environment. E. are polygenic, encode genes for continuous traits, and are influenced by the environment.
In the accompanying figure, the structure labeled “B” is a ____
a. muscle fiber b. sarcoplasmic reticulum c. mitochondria
d. myofibril e. Z line
Which of the following environmental factors can affect the phenotypes expressed by a genotype?
a. Atmospheric oxygen b. Diet c. Solar radiation d. Humidity e. All of the above cause plasticity f. I don't know the answer
Epstein-Barr virus infections are typically asymptomatic in ________ because of incomplete development of adaptive immunity
A) the elderly B) AIDS patients C) adolescents D) adults E) young children