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- In the formation of a thioester bond, the involved hydrogen atoms: A) are transferred to NAD+ B) are transferred to FAD C) remain with the aldehyde D) remain with the thiolCoenzyme A binds to an acetyl group via a __________ linkage. A. carboxylic acid ester B. carboxylic acid anhydride C. phosphoric anhydride D. thioesterHow will each change affect the reaction? HNO2(aq)⇌H^+(aq)+NO2^-(aq) a.) Decreasing volume b.) Removal of NO2^- c.) Addition of OH^-(which will react with and remove H^+)
- What is the half-reactions and the Ecell to this equation: 2Ag (s)+H2S (g)+ 1⁄2O2 (g) →Ag2S+H2O (l)All antioxidants_____ . a. prevent other molecules from being oxidized b. are coenzymes c. balance charge d. deoxidize free radicalsWhich of the following is most correct about dehydration reactions? a)They often accompanied by hydrolysis of phosphate esters in biology b)They are easy to perform selectively in water c)Proteolysis is an example of a dehydration reaction
- Consider the reaction A + 2B ----> C. If the molar mass of C is twice the molar mass of A, what mass of C is produced by the complete reaction of 10.0 g A?(a) 10.0 g(b) 30.0 g(c) 60.0 gSay there is an additional electron carrier added to the ETC, hydrogen sulfide. Where would it be in the ETC?The synthesis of products is limited by the amount of reactants.(a) If one mole each of CH4, NH3, H2S, and CO2 is added to 1 literof water (= 55.5 moles of H2O) in a flask, how many moles ofhydrogen, carbon, oxygen, nitrogen, and sulfur are in the flask?(b) Looking at the molecular formula in the table, how manymoles of each element would be needed to make 1.0 mole ofglycine? (c) What is the maximum number of moles of glycine thatcould be made in that flask, with the specified ingredients, if noother molecules were made? Explain. (d) If serine or methioninewere made individually, which element(s) would be used up firstfor each? How much of each product could be made?
- A chemical reaction has a △G of -14 kcal/mol. Adding an enzyme has been shown to increase the reaction 10-fold. What would be the △G of the reaction when that enzyme is added? A) -1.4 kcal/mol B) -14 kcal/mol C) +14 kcal/mol D) -140 kcal/molIron binds to heme with what are known as ________ bonds. a. ionic b. coordinate c. covalent d. hydrogen e. ironIf glucose labeled with 14C in C-1 is metabolized to ethanol and CO2 via fermentation, which carbon will contain 14C in: a. The CO2 b. the carbon atom carrying the OH of ethanol c. the carbonyl carbon atom of ethanol d. the methyl carbon atom of ethanol
