Four of the five answers listed below are receptors. Select the exception
a. muscle
b. Pacinian corpuscle
c. hair cells
d. cones
e. taste buds
A
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198 The planktonic form of cnidarians is called a medusa
Indicate whether the statement is true or false
In a hormone-stimulated signaling system, the concentration of hormone exposed to the receptor is
A) always equal to the receptor Kd for binding the hormone. B) never equal to the receptor Kd for binding the hormone. C) below the receptor Kd for binding the hormone before stimulation of hormone secretion. D) above the receptor Kd for binding the hormone before stimulation of hormone secretion. E) always constant.
The process of photosynthesis requires the raw materials
A. O2 and H2O. B. CO2 and H2O. C. sugar and CO2. D. H2O and sugar.
Molecules that carry out transcription bind to this region of the DNA.
A. Exon B. Transcription site C. Promoter D. Initiator E. Ribosome