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How do G protein-coupled receptors (GPCRs) initiate signal transduction pathways in cells and how can their activity be modulated by different allosteric ligands?

asked Feb 13 in BioChemistry by ElviaBumgarn (1.8k points)

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How do G protein-coupled receptors (GPCRs) initiate signal transduction pathways in cells? Discuss the biochemical mechanism involved in the activation of GPCRs and the downstream signaling events that follow.

asked Feb 13 in BioChemistry by Jaqueline50I (2.0k points)

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How does the activation of G protein-coupled receptors (GPCRs) initiate signal transduction pathways in biochemistry, and what is the specific biochemical mechanism involved in this process?

asked Feb 13 in BioChemistry by MagdaMeares (1.8k points)

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What is the structural difference between furan and pyrrole, and what effect does this structural difference have on their chemical reactivity and physical properties? Provide specific examples of reactions and properties to support your answer.

asked Feb 13 in Organic Chemistry by SammieToohey (1.6k points)

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What is the primary difference between furan and pyrrole in terms of their aromaticity, and how does that affect their chemical reactivity?

asked Feb 13 in Organic Chemistry by MuhammadNuna (2.1k points)

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What is the mechanism of free radical polymerization of vinyl chloride and how does the reaction pathway lead to the formation of PVC with high molecular weight?

asked Feb 13 in Organic Chemistry by ShavonneSalc (1.8k points)

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What conditions are required for the successful synthesis of high molecular weight polypropylene using Ziegler-Natta catalysts from propylene monomer?

asked Feb 13 in Chemical synthesis by CharlesAlcal (2.0k points)

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How many geometric isomers can be formed for the square planar complex (PtCl₂(NH₃)₂)?

asked Feb 13 in Coordination Chemistry by DarbyJackey7 (1.4k points)

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What conditions are needed for the catalytic polymerization of ethylene monomers in order to obtain high molecular weight polyethylene?

asked Feb 13 in Chemical synthesis by SarahWeston5 (2.0k points)

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What is the effect of doubling the concentration of reactant A on the initial rate of a second-order reaction having a rate constant of 0.002 M^-1s^-1 at a fixed concentration of reactant B?

asked Feb 13 in Chemical kinetics by JaninaStroh (2.1k points)

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What is the rate constant of a second-order reaction if its concentration is 0.5 M and its half-life is 5 minutes?

asked Feb 13 in Chemical reactions by RubinSander5 (2.2k points)

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What effect does varying the concentration of reactants have on the reaction rate for a reaction that follows a first-order reaction kinetics?

asked Feb 13 in Chemical kinetics by SvenMcConnel (1.3k points)

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What is the rate constant for the reaction: A + B → C if the concentration of A is 0.1 M, B is 0.2 M, and the initial rate of formation of C is 2.5 x 10^-3 M/s? (Assume the reaction follows first-order kinetics with respect to both A and B.)

asked Feb 13 in Chemical kinetics by MarciaBrooke (1.8k points)

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What is the reaction rate constant for the reaction A + B → C if the initial concentration of A is 0.2 M, the initial concentration of B is 0.3 M, the initial rate of reaction is 0.1 M/s, and the reaction is of first order with respect to both A and B?

asked Feb 13 in Chemical reactions by EmanuelWaldo (2.0k points)

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What structural and electronic parameters are necessary for a metal ion to function as a cofactor in metalloenzymes and metalloproteins, and how do these factors affect the enzyme's catalytic activity?

asked Feb 13 in Coordination Chemistry by AnitraSchard (2.1k points)

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What is the effect of changing the concentration of reactants on the reaction rate for a first-order reaction?

asked Feb 13 in Chemical kinetics by AgnesKkk964 (1.9k points)

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What is the rate constant for the decomposition of 2.00 mol/L of hydrogen peroxide (H2O2) at 25°C, given that the reaction follows first-order kinetics and the rate of decomposition is 0.050 mol/L·s?

asked Feb 13 in Chemical kinetics by KatherineRei (1.9k points)

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What is the rate constant for a first-order decomposition reaction if the half-life is 120 seconds and the initial concentration of the reactant is 0.02 M?

asked Feb 13 in Physical Chemistry by CasimiraMick (1.8k points)

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What is the rate constant for a first-order reaction if the initial concentration of the reactant is 1.5 M and its concentration after 2 minutes is 0.75 M? The half-life of the reaction is 4 minutes.

asked Feb 13 in Chemical kinetics by KeithAnthon1 (1.9k points)

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What is the rate constant for the first order decomposition of hydrogen peroxide if the initial concentration of hydrogen peroxide is 0.1 M and 80% of the hydrogen peroxide decomposes in 5 minutes?

asked Feb 13 in Chemical kinetics by RoseIqw0722 (2.0k points)

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