What are the three major energy reserves in humans and what is the relative amou
ID: 205838 • Letter: W
Question
What are the three major energy reserves in humans and what is the relative amount of energy stored in each of these reserves? Where are the major storage sites for each of these fuel reserves? How does the use of protein as an emergency “energy reserve” differ from the use of the other energy reserves? Given that the carbohydrate reserve in humans is so small, why is it so important? What characteristics of lipids make them so efficient in their role as energy stores?
What are the usual features of catabolic pathways? What types of compounds do humans use as energy sources in catabolic pathways? What is the ultimate source of oxidizing power for catabolic pathways? What cofactor serves as the immediate source of oxidizing power in catabolic pathways? What are the starting materials and end products of catabolic pathways? What role do oxidation-reduction reactions play in catabolic pathways?
What are the usual features of anabolic pathways? What are the starting materials for anabolic pathways, and what are the end products? What is the major source of energy for anabolic pathways? What is the major source of reducing power in these pathways? What role do oxidation-reduction reactions play in anabolic pathways?
Explanation / Answer
CATABOLIC PATHWAY:
1. Larger molecules are broken down to smaller molecule by oxidation
2. These release energy which are used for the production of ATP
3. These also yield high energy electron which in turn used for the reduction of NAD+ to NADH
4. Catabolic pathways also increases entropy.
ANABOLIC PATHWAY:
1. It is the biosynthesis os complex larger molecules from the smaller molecules.
2. ATP provided the energy required.
3. Oxidation of NADPH to NADP+ provides electron for reduction.
4. Anabolic pathways decreases entropy
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