Multiple Choice
The endocrine system relies on __________ that __________ all of the cells of the body.
43. Endocrine System
Endocrine System
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Because most chemical signals are unable to pass through the plasma membrane, the cellular action they initiate results from __________.
A
ligand binding
B
direct stimulation of the cell's DNA
C
the enzymatic behavior of the signal molecule
D
binding to intracellular receptors
E
the activation of a signal transduction pathway
Verified step by step guidance1
Understand that most chemical signals are hydrophilic and cannot pass through the hydrophobic core of the plasma membrane.
Recognize that these signals must interact with cell surface receptors to initiate a cellular response.
Learn that when a ligand binds to a receptor on the cell surface, it triggers a series of events inside the cell known as a signal transduction pathway.
Identify that the signal transduction pathway involves a cascade of molecular interactions that amplify the signal and lead to a specific cellular response.
Conclude that the activation of a signal transduction pathway is the mechanism by which the initial extracellular signal is converted into a functional response within the cell.
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Endocrine System practice set
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