Why is it advantageous that polysaccharides can have branched chains? How do they achieve this structural feature?
Answer to relevant QuestionsWhy is the polysaccharide chitin a suitable material for the exoskeleton of invertebrates such as lobsters? What other sort of material can play a similar role? Which reaction or reactions that we have met in this chapter require NADH? Which reaction or reactions require NAD+? List the enzymes that catalyze the reactions that require NADH and that require NAD+. Using the Lewis electron-dot notation, show explicitly the transfer of electrons in the following redox reactions. (a) Pyruvate + NADH + H+ → Lactate + NAD+ (b) Acetaldehyde + NADH + H+ S Ethanol + NAD+ (c) ...Why would enzymes be found as isozymes? How can the synthesis and breakdown of fructose-2,6-bisphosphate be controlled independently?
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