Vitamin D is produced in the skin when 7‑dehydrocholesterol reacts with UVB rays (ultraviolet B) having wavelengths between 270 nm and 300 nm. What is the energy range ?min≤?≤?max of the UVB photons?
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Vitamin D is produced in the skin when 7‑dehydrocholesterol reacts with UVB rays (ultraviolet B) having wavelengths between 270 nm and 300 nm. What is the energy range ?min≤?≤?max of the UVB photons?
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- What is the absorption peak(s) of methyl orange? Make sure to write down the wavelength at which the absorption peak(s) occur and include units What color(s) does methyl orange absorb the best?Consider the following reaction:ATP → AMP + 2 PiCalculate the equilibrium constant (Keq) given the following ΔG°′ values:ATP → AMP + PPi (−32.2 kJ/mol)PPi → 2Pi (−33.5 kJ/mol)Why is it 30 to 32 ATP produced for cellular respiration in Physiology? When I calculate it, I get 32.
- Consider the coupled reactions: 1,3-BPG → 3-PG + Pi ΔG°'= -16.3 kcalmolkcalmol ATP → ADP + Pi ΔG°'= -7.3 kcalmolkcalmol Which of the following is TRUE about the total ΔG°’ for the coupled reactions? A. +23.6 kcal/mol; nonspontaneous B. -23.6 kcal/mol; spontaneous C. +9.0 kcal/mol; nonspontaneous D. -9.0 kcal/mol; spontaneousWrite down the energy content in kilo-calories (kcal) from one gram of fat, one gram of carbohydrate and one gram of protein obtained by complete combustion in calorimeter (assume by yourself and show the calculation steps) and by completely broken down in human body in the following table. Please give references. Complete combustion in calorimeter * Completely broken down in body 1 g of Fat 1 g of Protein 1 g of Carbohydrate 1 g of Mixed Foodin which of the following alternatives is the greatest amount of energy released from the hydrogenation of:a) 1 mole propeneb) 1 mole of butadiene 1.3c) 1 mole pentyn-2d) 3 moles of ethene
- Magnesium ion (Mg2+) forms complexes with the negative charges of the phosphate in ATP. In the absence of Mg2+, would ATP have more, less, or the same stability as when the ion is present?A total of 30.5 kJ mol-1 of free energy is needed to synthesise ATP from ADP and Pi when the reactants and products are at 1.0 M concentrations and the temperature is 25oC. Because the actual physiological concentrations of ATP, ADP, and Pi are not 1.0 M, and the temperature is 37oC, the free energy required to synthesise ATP under physiological conditions is actually ~ 46.2 kJ mol-1. A 68 kg adult requires an energy intake of 8,550 kJ of food per day (24 hours). Calculate the mass (in Kg) of ATP synthesised by a human adult in 24 hours, assuming that the percentage efficiency of converting inputted calories in ATP is 50%. What percentage of the body weight does this represent?Consider the coupled reactions: 1,3-BPG → 3-PG + Pi ΔG°'= -16.3 kcalmolkcalmol ATP → ADP + Pi ΔG°'= -7.3 kcalmolkcalmol Which of the following is TRUE about the total ΔG°’ for the coupled reactions? -9.0 kcal/mol; spontaneous +9.0 kcal/mol; nonspontaneous -23.6 kcal/mol; spontaneous +23.6 kcal/mol; nonspontaneous
- What is the absorption peak(s) of methyl orange? Make sure to write down the wavelength at which the absorption peak(s) occur. Include units, please What color(s) does methyl orange absorb the best?How many net ATPs would be produced if the following fatty acid is completely oxidized intocarbon dioxides and water? 94.5 96.5 98 98.5 108Does the following inhibitors decrease ATP production or Blocks ATP production? a. DCCD b. FCCP c. Amytal d. Carboxin e. Cyanide
