Proteases are enzymes that destroy proteins. Application of these enzymes to an intact cell strips the proteins off the cell surface. If a specific signaling molecule is added to cells stripped of surface proteins and the cell still responds, what must be true of the signaling pathway? The receptor is a ligand-gated ion channel. The signaling molecule doesn't need a receptor. O The signal can directly activate the second messenger system and does not need to activate the receptor. O The receptor for this signal is inside the cell, and the signaling molecule is nonpolar and can diffuse into the cell.
Proteases are enzymes that destroy proteins. Application of these enzymes to an intact cell strips the proteins off the cell surface. If a specific signaling molecule is added to cells stripped of surface proteins and the cell still responds, what must be true of the signaling pathway? The receptor is a ligand-gated ion channel. The signaling molecule doesn't need a receptor. O The signal can directly activate the second messenger system and does not need to activate the receptor. O The receptor for this signal is inside the cell, and the signaling molecule is nonpolar and can diffuse into the cell.
Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter15: The Endocrine System
Section: Chapter Questions
Problem 2RQ: A hormone molecule binds to a receptor on a cell membrane. It doesnt enter the cell; rather, the...
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