Concept explainers
To analyze:
The five chemical classes of messengers and explain those that are hydrophilic and those that are hydrophobic.
Introduction:
Messengers are of two types, Hydrophilic messengers and hydrophobic messengers.
Hydrophilic or lipophobic messengers can dissolve in water but not in lipids. Hence, they are incapable of crossing the plasma membrane.
Hydrophobic or lipophilic messengers can dissolve in lipids and hence are capable of crossing the plasma membrane. However, they are not soluble in water.
There are five chemical classes of amino acid messengers namely
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