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Describe the coordination geometry and the type of ligands involved in the active site of the metalloenzyme catalase, which uses a heme group to convert hydrogen peroxide to water and oxygen. How does the nature of the ligands and the coordination geometry contribute to the enzyme's catalytic activity?

asked Jan 31 in Coordination Chemistry by KlaraPostle (720 points)

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How do changes in molecular geometry affect the calculation of magnetic properties in molecules and materials using quantum chemistry?

asked Jan 31 in Quantum Chemistry by Marquita53Q8 (470 points)

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What is the specific coordination environment and reaction mechanism of the metal ion in the active site of the metalloenzyme, carbonic anhydrase? Provide a detailed analysis of the coordination bonds formed between the metal ion and amino acid residues within the enzyme.

asked Jan 31 in Coordination Chemistry by PhyllisWhitc (340 points)

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What is the potential of a natural plant compound to act as an effective cancer treatment? Provide experimental evidence to support your findings, including the mechanism of action and toxicity profile of the compound.

asked Jan 31 in Medicinal Chemistry by JoyMarkley53 (710 points)

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What are the differences in chemical structure between carbohydrates and lipids, and how do these differences contribute to their distinct properties and functions in biological systems? Provide examples of each molecule and their biological roles.

asked Jan 31 in Organic Chemistry by QSALea374924 (330 points)

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What is the role of carbohydrate-protein interactions in the recognition of cell surface receptors and how does the specific structure of carbohydrates contribute to this recognition process?

asked Jan 31 in BioChemistry by KatrinSallee (370 points)

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What is the standard enthalpy change (∆H°) for the reaction: 2H2O(l) + 2O2(g) → 4H2O(l) at 25°C? Calculate the value using quantum chemical methods and compare it to the experimental value.

asked Jan 31 in Quantum Chemistry by RafaelaEngel (610 points)

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How do changes in pH affect the surface properties of biomembranes?

asked Jan 31 in Surface Chemistry by ShaunRea9759 (310 points)

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What is the effect of increased temperature on the reaction rate and subsequent reaction safety of a chemical reaction and how can this be mitigated?

asked Jan 31 in Chemical kinetics by SherryDoll43 (590 points)

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What is the mechanism of bioluminescence in fireflies and how does it differ from other bioluminescent organisms in terms of the photochemical properties involved in the process?

asked Jan 31 in PhotoChemistry by MiaWelker055 (650 points)

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How do changes in environmental conditions affect the metabolic pathways and molecular networks involved in cellular metabolism? Provide examples using metabolomics and systems biology approaches.

asked Jan 31 in BioChemistry by LottieWolken (550 points)

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What is the dipole moment of water molecule using ab initio calculations?

asked Jan 31 in Computational Chemistry by Brian0571409 (470 points)

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How can changes in atmospheric concentrations of greenhouse gases impact global temperatures and what chemical reactions take place to contribute to this effect?

asked Jan 31 in Environmental Chemistry by Grace6780804 (530 points)

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How do changes in concentrations of enzymes and substrates affect the rate of a metabolic pathway? Provide a detailed explanation using the glycolysis pathway as an example.

asked Jan 31 in BioChemistry by KathiAntonio (510 points)

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How do certain drugs interact with each other in the human body, and what is the impact of these interactions on drug efficacy and potential side effects?

asked Jan 31 in Medicinal Chemistry by SiennaKoontz (530 points)

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How do carbohydrate-protein interactions play a role in the recognition process of glycoproteins? Provide specific examples of glycoproteins and their associated carbohydrate structures, and explain how these interactions contribute to the protein's function in the cell.

asked Jan 31 in BioChemistry by SadieCrosby (570 points)

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1 answer 68 views

What is the theoretical electronic band gap of a newly synthesized perovskite material with the chemical formula ABX3? Calculate the electronic band gap using a computational method such as density functional theory (DFT) and compare it with the experimental value to assess the accuracy of the computational approach.

asked Jan 31 in Quantum Chemistry by KenZbk24359 (510 points)

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1 answer 67 views

How do the electronic and optical properties of a nanomaterial change as the size of the nanoparticle is decreased? Using quantum chemistry calculations, determine the relationship between the nanoparticle size and its electronic and optical properties.

asked Jan 31 in Quantum Chemistry by CVRSteffen34 (630 points)

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How do changes in the phosphorylation state of proteins within a cell’s signal transduction pathway affect the activation of downstream enzymes and ultimate cellular response? Provide examples of specific signal transduction pathways and how modulating these phosphorylation events can impact cellular behavior.

asked Jan 31 in BioChemistry by BrittnyHoutz (390 points)

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What is the purity level of a sample of caffeine obtained from a local vendor? Determine the purity of the sample by taking multiple melting point readings and comparing the results to the literature value of caffeine's melting point.

asked Jan 31 in Analytical Chemistry by OMDAlyce2017 (490 points)

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