Biochemistry C785 Module 4 Quiz 2020 – Western Governors University

Biochemistry C785 Module 4 Quiz 2020 – Western Governors University Which of the following processes does NOT take place in the mitochondria of a cell? Select one: a. Production of FADH2 b. Conversion of pyruvate to lactic acid ! When oxygen is scarce, pyruvate--created through glycolysis---remains in the cytosol and will be converted anaerobically into lactate (fermentation) c. Creation of a proton gradient d. Production of CO2 in the citric acid cycle Under anaerobic conditions in humans, which molecule is formed in the cytosol by fermentation? Select one: a. Glucose-6-phosphate b. Acetyl-CoA c. Lactate ! When there is no oxygen available for cellular respiration, for example, during strenuous muscular exercise, the pyruvate formed via glycolysis will be fermented into lactic. The lactate will be sent to the liver for conversion back into glucose via the Cori cycle d. Fructose A woman is about to begin her ascent of Mount Everest and is preparing for Day 1 of the climb. Approximately 6 hours before the hike begins, she and her climbing team eat a meal containing 80% complex Carbohydrates. What is the physiological benefit of this approach? Select one: a. Improving glycogen stores in liver and muscle ! The complex Carbohydrates will be broken down in the digestive track to monosaccharides (glucose) and absorbed into the bloodstream. Since that dietary glucose is not immediately needed for ATP (the hiker has yet to begin the long hike), glycogen will be made. b. Increasing glycolysis in the hours leading up to the hike c. Raising insulin levels d. Stimulating the pancreas to release glucagon