2. John, Paul and Joseph were close friends with a common interest in fitness. John, who had recently started preparing for his first marathon mentioned to his friends that he had startedon a low-carbohydrate, protein-rich diet so that he can be muscular but lean. However, Paul said this is actually not a good diet for a marathoner.2.1. What is Paul's reason for saying that John's diet is not good?2.2. John's girlfriend Mary also wanted to join the marathon, but was advised by her doctor not to, as she was diabetic. Why would diabetes be a problem for runners?2.3. Joseph, John and Paul decided to join a triathlon. Mary joined them to cheer for John. Unfortunately, a sudden storm sank their boat while they were on their way to the triathlonsite. All managed to survive by swimming to a tiny, uninhabited island. They lost all their things, including Mary's insulin.It took three days, with no food or shelter before they were rescued. By then, Mary was already very weak. Based on your knowledge of metabolism, determine the current state ofMary's metabolic pathways (whether active or inactive) in her various organs.OrganPathwayStateLiverGlycolysisGluconeogenesisGlycogen synthesisFatty acid synthesisBeta-oxidation of FAMuscleGlycolysisCitric Acid cycleFatty acid synthesisAdiposeGlycogen synthesisFatty acid synthesis2.4. What would be the expected intracellular levels of the following metabolites in Mary's liver? Indicate whether high, low or normal.MetaboliteLevelGlucoseKetone bodiesFree fatty acidsNADHAcetyl-CoAOxaloacetate2.5. Overexposure to sunlight has caused a mutation in Joseph's gene coding for glucose-6-phosphatase. Soon after, he became delirious.2.5.1. What pathway will become inactive because of the mutation?2.5.2. Explain the consequence of inactivating this pathway and its effects on Joseph.

Carbohydrates are the major source of instant energy. Runners need a lot of energy to move their…

2. John, Paul and Joseph were close friends with a common interest in fitness. John, who had recently started preparing for his first marathon mentioned to his friends that he had started on a low-carbohydrate, protein-rich diet so that he can be muscular but lean. However, Paul said this is actually not a good diet for a marathoner. 2.1. What is Paul's reason for saying that John's diet is not good? 2.2. John's girlfriend Mary also wanted to join the marathon, but was advised by her doctor not to, as she was diabetic. Why would diabetes be a problem for runners?

2. John, Paul and Joseph were close friends with a common interest in fitness. John, who had recently started preparing for his first marathon mentioned to his friends that he had started on a low-carbohydrate, protein-rich diet so that he can be muscular but lean. However, Paul said this is actually not a good diet for a marathoner. 2.1. What is Paul's reason for saying that John's diet is not good? 2.2. John's girlfriend Mary also wanted to join the marathon, but was advised by her doctor not to, as she was diabetic. Why would diabetes be a problem for runners?

Ebk:Nutrition & Diet Therapy

10th Edition

ISBN:9780357391747

Author:DEBRUYNE

Publisher:DEBRUYNE

Chapter10: Fitness And Nutrition

Section: Chapter Questions

Problem 2SC

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