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- :Write the correct order of the following structures according to their biosynthetic pathway between A and B : A B shikmic acid 1 Flavonoids 2 prephenic acid 3 Photosynthesis 4 Phenylalanine 5 Co2 6 phenylpyruvic acid 7 erthrose-4-phosphate 8 corismic acid 9 3-dehydroqunic acid 10Draw the structure of the products formed when Arabinose shown above undergoes the following reaction: Tollen's reagent (include side product) Benedict's reagent (include side product) Oxidizing enzyme to produce alduronic acid Reducing agent like NaBH4 with Ethylamine (CH3CH2NH2) do everything for upvote. no upvote if incompleteguanosine and a water bind in the active site, does not matter in which order. The scissile N-1 glycosidic bond between the anomeric carbon and N9 of the base is broken resulting in an oxocarbenium transition state. The leaving group electrons are not protonated, but instead swing up to form a double bond between N9 and C8. The double bond that is already present on the purine swings out on N7 and is protonated by an active site histidine acting as a general acid. An active site aspartate acts as a general base, and deprotonates the water substrate molecule. The deprotonated water is then free to attack the transition state in a manner that will generate an αribose. Draw the active site and show how the mechanism works. You will need to draw 3 or 4 different active site “snap-shots” to show the entire process. Be sure to clearly show the transition state and how it might be stabilized
- The enzyme prenyl transferase is responsible for condensing isopentenyl pyrophosphate units during the second stage of cholesterol biogenesis. Which of the following intermediates could still form if prenyl transferase were inhibited? (A) farnesyl pyrophosphate(B) dimethylallyl pyrophosphate (C) squalene(D) geranyl pyrophosphate(E) lanosterolThe 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 + 12H2OWhich of the following statement is CORRECT? A Hydrolysis of starch into glucose in an elimination reaction B Group transfer reaction is a nucleophilic substitution reaction C Conversion of 3-phosphoglycerate to 2-phosphoglycerate is a group transfer reaction D Most biochemical reaction occurs via homolytic cleavage E Electrophiles are electron-rich, while nucleophiles are electron-deficient
- Suppose ribulose-5-phosphate, labeled with 14C in carbon 1, is used as the substrate in carbon reactions. In which carbon of 3PG will the label appear?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 + 12H2OWould you expect DCPIP to become colorless if your chloroplast suspension is in the presence of the herbicide dichlorophenyldimethyl urea (DCMU)? Explain your Is the presence of light a direct requirement for starch synthesis? Why or why not?
- If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O EXCEPT a) ribulose bisphosphate (RuBP) b) glyceraldehyde 3-phosphate (G3P) c)O2 d)3-phosphoglycerate e)glucoseIf a biochemist is trying to synthesis a 14C Valine at the a-Carbon using Pyruvate as a starting material, the Pyruvate must be labeled with 14C at the Carbonyl carbon. True or False. The photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? 6CO2 + 12H2S g C6H12O6 + 6S2 + 6H2O C6H12O6 + C6H12O6 g C12H22O11 + H2O 6CO2 + 12H2O g C6H12O6 + 6O2 + 6H2O C12H22O11 + H2O g C6H12O6 + C6H12O6 C6H12O6 + 6O2 + 6H2O g 6CO2 + 12H2O
