Eicosanoids are NOT Effective as Hormones Because

Question

Eicosanoids are NOT effective as hormones because
A)they are hydrophobic and cannot dissolve easily in the blood.
B)they have a very short half-life and would degrade before reaching the target cell.
C)the signaling cell cannot regulate when they diffuse through the membrane.
D)all of the above

Accepted Answer

Eicosanoids have a short half-life and would degrade before reaching the target cell, which makes them less effective as hormones. Although they are hydrophobic, they can still be transported in the blood by carrier proteins, and their diffusion through the membrane can be regulated by the signaling cell. However, their rapid degradation limits their effectiveness as hormones.