Multiple Choice 2 points Which of the following is NOT a downstream effect of hormone binding? A hormone-gated ion channel is opened or closed. An adhesion receptor sends information to cytoskeleton. the blood-brain barrier becomes permeable to triglycerides. A steroid bound to receptor protein in nucleus alters gene expression. A secondary messenger is released inside cell.
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What happens when a hormone binds to a plasma membrane receptor? A) The receptor moves from the plasma membrane to the nucleus. B) The receptor changes shape and activates intracellular 2nd messengers and enzymes. C) Two hormone-bound receptors form dimers that bind to DNA and initiate transcription. D) The receptor acts as a channel protein through which the hormone enters the cell. E) The receptor inactivates the hormone.
Sukhada S.
When a hormone binds to a nuclear receptor, a. DNA produces mRNA. b. G proteins are activated. c. the hormone-receptor complex causes ion channels to open or close. d. the cell's response is faster than when a hormone binds to a membrane-bound receptor. e. the hormone is usually a large, water-soluble molecule.
Adi S.
1. a. After a steroid hormone binds to its intracellular receptor, transcription of specific genes occurs. How does this happen? A. The activated receptor phosphorylates and activates other signal transduction proteins. B. The activated receptor moves into the nucleus and binds to DNA. C. The activated receptor binds to a G protein and activates it. D. The activated receptor is an ion channel that opens. 2. b. Which of the following is NOT a cell membrane receptor? A. Ligand-gated ion channel B. Receptor kinase C. Intracellular receptor D. G protein-coupled receptor
Bryan V.
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