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In the following graphs, the cellular response, as measured in real time by the concentration of a certain active effector protein, is plotted over time for five cell types (A to E) that are treated with three different concentrations of a signal molecule. During the time period indicated by the horizontal gray bar, the signal molecule is present in the culture media at a concentration of 1 nM (dotted curve), 5 nM (gray curve), or 25 nM (solid curve). Answer the following question(s) based on these graphs.
-Which of the cell types A to E shows the lowest sensitivity to the signal?
A)
B)
C)
D)
E)
Apocrine Sweat Glands
Sweat glands that produce a more viscous sweat, found in specific body areas and active from puberty onwards.
Functional Hair Follicles
Hair follicles that are actively producing hair, indicating health and vitality of the hair growth cycle.
Hair Bulb
The rounded, club-shaped structure located at the base of the hair follicle, containing active cells that grow hair.
Cuticle
Outer, thin layer, usually horny—for example, the outer covering of hair or the growth of the stratum corneum onto the nail.
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