How is hormone binding to its receptor more like an allosteric regulator binding to an enzyme than a substrate binding to an enzyme? Like allosteric regulation, hornmone binding is noncovalent and serves to control the rate of a reaction, rather than to take part in a reaction. O Like allosteric regulation, hormone binding is ionic and serves to control the rate of a reaction, rather than to take part in a reactionc O Like allosteric regulation, hormone binding is covalent and serves to control the rate of a reaction, rather than to take part in a reactionc Submit Request Answer

How is hormone binding to its receptor more like an allosteric regulator binding to an enzyme than a substrate binding to an enzyme? Like allosteric regulation, hornmone binding is noncovalent and serves to control the rate of a reaction, rather than to take part in a reaction. O Like allosteric regulation, hormone binding is ionic and serves to control the rate of a reaction, rather than to take part in a reactionc O Like allosteric regulation, hormone binding is covalent and serves to control the rate of a reaction, rather than to take part in a reactionc Submit Request Answer

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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dog drools (produces saliva) in response to the scent of a steak. This is an example of O Homeostasis Negative feedback control of salivary secretion O Feed-forward (open loop) regulation O All of the above QUESTION 1 Female rabbits release a scented chemical from their mammary glands when they are ready to nurse their newborns. The scent causes the young rabbits to immediately seek out their mother and begin nursing. This chemical messenger is an example of a: O paracrine O nanotube O pheromone O neurohormone O nuerotransmitter
Which of the following statements is WRONG with regard to the following molecule? HO O OH NH₂ N It is made from ATP It activates PKA It is highly unstable and rapidly breaks down on its own. It is involved in adrenaline signaling.
39 of 41 Which of the following statements best describes autocrine signalling? O A cell communication mechanism in which the signalling molecules bind to receptors located on the cell secreting the signalling molecules. A cell communication mechanism in which the signalling molecules bind to receptors located on adjacent cells. O A cell communication mechanism in which the signalling molecules are released into the circulatory system to bind to receptors located on cells in tissues some distance away. A cell communication mechanism in which the signalling molecules are peptide hormones. A cell communication mechanism in which the signalling molecules are steroid hormones.
Phosphorylase kinase integrates signals from thecyclic-AMP-dependent and Ca2+-dependent signalingpathways that control glycogen breakdown in liver andmuscle cells (Figure Q15–4). Phosphorylase kinase is com-posed of four subunits. One is the protein kinase that cata-lyzes the addition of phosphate to glycogen phosphorylaseto activate it for glycogen breakdown. The other three sub-units are regulatory proteins that control the activity of thecatalytic subunit. Two contain sites for phosphorylation byPKA, which is activated by cyclic AMP. The remaining sub-unit is calmodulin, which binds Ca2+ when the cytosolicCa2+ concentration rises. The regulatory subunits controlthe equilibrium between the active and inactive confor-mations of the catalytic subunit, with each phosphate andCa2+ nudging the equilibrium toward the active confor-mation. How does this arrangement allow phosphorylasekinase to serve its role as an integrator protein for the mul-tiple pathways that stimulate glycogen…
The fastest effect from stimulation of a G-protein-coupled receptor (GPCR) is from O CAMP G-alpha, O the shortcut pathway G-alpha G-alphas
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O Copy of Pathway divergence occurs when: O signaling pathways produce the same outcome one signaling pathway triggers another Osignaling pathways split to produce multiple outcomes. Osignaling pathways use a common intermediate Question 14 Which of the following is NOT a mechanism for halting G-protein coupled receptor signaling? receptor endocytosis. OGDP hydrolysis Arrestins 2. O ATP hydrolysis
If the DNA-Binding Domain on hormone receptors were mutated and unable to function properly, which of the following hormone receptors would be affected? Select one or more: O a Cytokine Receptor Ob. Steroid Receptor Family OC. Thyroid Receptor Family Od. Growth Factor Receptor O e. GPCR
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