Hydrophobic signals after binding to the cell-surface receptors activate downstream signal transduction proteins inside the cells. Select one: O True O False
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Solved in 2 steps
- Describe three ways in which a gradual increase inan extracellular signal can be sharpened by the target cellto produce an abrupt or nearly all-or-none response.Name the steps that occur when a signal binds to a receptor on a responding cell.What two steps occur in cell signaling occur AFTER the signal has been detected by a cell surface receptor? a. transduction and inflection b. transduction and amplification c. amplification and termination d. amplification and diversion
- when a chemical messenger (or ligand) reaches a target cell, it binds to a receptor. A hydrophobic ligand binds to a(n) _______, whereas a hydrophilic ligand binds to a(n)_________. a. agonist receptor; antagonic receptor b. transmembrane receptor; intracellular receptor c. antagonist receptor; agonist receptor d. intracellular receptor; transmembrane receptorChoose the best term which describe the following statement: antagonist binds to the binding site of receptor and change the shape: Select one: Incorrect Induced fit. Correct induced fit. Signal transduction. Perfect fit.Nerve growth factor binds to which type of receptor? a.) Receptor tyrosine phosphatases b.) Receptor Serine/Threonine Kinase c.) Receptor guanylyl cyclase d.) Receptor tyrosine kinase
- Choose high or low When the ion binding sites pumps are open to the inside of the cell the pump has a high/low affinity to potassium and a high/low affinity for sodium. When the ion binding sites are open on the outside the pump has a high/low affinity to potassium and a high/low affinity to sodiumIn 5-7 sentences. Provide a narrative overview of the function of the receptor including: The extracellular signal that acts as the ligand for the receptor The physiological response that is induced The benefits of this pathway to the cell/organismDescribe three different responses of a cell-surfacereceptor on binding a signaling molecule and undergoing aconformational change.
- Which receptor undergoes clustering and autophosphorylation in response to activation by a signal? Group of answer choices: a)Ligand-gated ion channels b)Receptor Tyrosine Kinases (RTKs) c)G-Protein Coupled Receptors (GPCRs) d)Nuclear ReceptorsWhich of these is NOT a response that occurs when an intercellular chemical signal binds to a membrane-bound receptor? 1. Enzymes at the inner surface of the cell are directly activated. 2. Ion channels open or close. 3. Enzymes add phosphate groups to certain proteins in the cell. 4. The chemical signal and receptor bind to DNA in the nucleus. 5. Activated G proteins activate enzymes that produce intracellular messengers.Select the correct order of signal transduction / cell communication / cell signaling. Reception - Response - Amplification Amplification - Reception - Response Response - Reception - Amplification Reception - Amplification - Response