hat is the mechanism driving the bromothymol blue solution color change? This is a quesiton from my bio lab as how cellular respiration occurs in germinated beans, dry beans, or no beans at all. Anyone know?
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- The photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? cell bio 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C6H12O6 + C6H12O6 C12H22O11 + H2O 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2OIn the biosynthesis of heme, ring cyclization, isomerization, and decarboxylation reactions take place. Identify the potential intermediates and show the electron flow in the following diagram. HO,C R1 HO2C- -R2 NH HN- но- NH HN- HO2C R R2 unstable intermediate Uro'gen II HO2C Me Me NH HN- -CO2H HN NH Me Me HO2C CO2H Coproporphyrinogen IIExample 14.6 The oxygen requirement for cell growth in glueose can be represented by the following equation (Mateles, 1971) 32NC+8(Nh2)+16(No2) Fx/sM +yo2 – 2.67yc + 1.714YN2 – 8y H2 ro2 = In which ro2 is the oxygen required for each gram of cells produced, N stands for no. of atoms present in each molecule substrate, y stands for mass fractions and M is the MW of the substrate. The yeast cell may be considered to be CH1.800.5NO.2. Calculate rO2 if the yield factor (Yx/s) is 0.46g of cells produced for each gram of substrate consumed.
- The compound triclosan inhibits bacterial enoyl-ACP reductase. Explain why triclosan is useful as a microbicide.In one of the early tests of the chemiosmotic model, formation of ATP was assayed in a suspension of thylakoid vesicles. These vesicles had their stromal surface facing outward, that is, right -side-out. These vesicles were first acidified to pH 4 and then made alkaline in the presence of ADP and " PO.. The results obtained are shown in Figure 3 (A) and (B). (A) 200 100 10 15 Succinate (mM) (B) 300 200 100 6.5 7.0 7.5 8.0 8.5 pH of alkaline stage Figure 3 (i) Why does the yield of ATP increase with increasing concentrations of the succinic acid? (succinic acid has two carboxylic acid groups with pKa of 4.2 and 5.5). (ii) Why is the yield of ATP so critically dependent on the pH of the alkaline stage of the experiment? (iii) Predict the effects of treatments with Carbonyl cyanide-4 (trifluoromethoxy) phenylhydrazone, FCCP, an uncoupler of electron transport and ATP synthesis. ATP synthesis (pmol)Tell me one important function of an oxidant that is essential for ATP production.
- A microbe lives solely on acetate. It has an Electron Transport Chain driven by oxygen that has two hydrogen pumps and both NADH and FADH deliver their hydrogens (and electrons) to the first pump hence each generates 2 ATP. How many ATP are generated per acetate molecule?Thylakoids were isolated from chloroplasts and incubated in the dark in an acidic solution (pH 4) to equilibrate the pH. After 30 minutes, the thylakoids were transferred to a basic solution (pH 8) and kept in the dark. Will this system produce ATP? Explain. Will this system produce G3P? Explain.One of the steps in psilocybin biosynthesis is the phosphorylation of 4-hydroxytryptamine By the enzyme Psik as shown below, that involves the hydrolysis of ATP. NH₂ OH HO Psik HO of A& ADP 4-hydroxytryptamine ATP norbaeocystin The standard free energy changes for each reaction is shown in the Table below. J reaction 4-hydroxytryptamine + P₁ → norbaeocystin ATP → ADP+ Pi (b) What is the equilibrium constant at 37 °C? AG 27.7 kJ/mol -32.2 kJ/mol (a) Write the net reaction. What is the standard free energy change for the net reaction? (c) In the cell, the concentration of ATP is 3.1 mM, the concentration of P; Is 5.90 mM, and the Concentration of ADP is 220 μM. What will AG Be if the concentration of norbaeocystin Is always kept at 1/100 of the concentration of 4-hydroxytryptamine?
- The photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + C6H12O6 C12H22O11 + H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2OHOW ARE PHOTOSYNTHETIC MICROBES ABLE TO EXTRACT ∼38 MOLECULES OF ATP FROM 3 MOLECULES OF CO2? EXPLAIN BY PROVIDING AN OUTLINE.Explain the chemical process of the fixation of carbon dioxide (CO2) to an existing carbon chain such as Ribulose-1,5-bisphosphate carboxylase-oxygenase. In your answer be sure to address the following details. which carbon is acting as the electrophile and which carbon is acting as the nucelophile is this process exergonic or endergonic in relation to the G of this reaction which enzyme(s) would be responsible for catalyzing this reaction.