Podcast
Questions and Answers
What effect does increasing exercise duration have on the percentage of energy from fat oxidation?
What effect does increasing exercise duration have on the percentage of energy from fat oxidation?
- It remains constant
- It decreases
- It fluctuates
- It increases (correct)
What inhibits the Carnitine system, which transports fats into mitochondria?
What inhibits the Carnitine system, which transports fats into mitochondria?
- Capillary density
- Falling pH at high intensities (correct)
- Mitochondrial content/enzymes
- Increased adipose tissue lipolysis
What provides oxaloacetate to allow beta oxidation to keep running?
What provides oxaloacetate to allow beta oxidation to keep running?
- Increased adipose tissue lipolysis
- Capillary density
- Glucose metabolism (correct)
- Fatty acid transporters
What does the regulation of metabolic flux depend on?
What does the regulation of metabolic flux depend on?
During which process is the bulk of ATP production happening?
During which process is the bulk of ATP production happening?
What is the primary fuel used during high-intensity exercise?
What is the primary fuel used during high-intensity exercise?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
Where does the Krebs cycle occur?
Where does the Krebs cycle occur?
What is the main source of energy for lower intensity, longer duration exercise?
What is the main source of energy for lower intensity, longer duration exercise?
What is the result of high rate of glycolysis?
What is the result of high rate of glycolysis?
What provides the energy for oxidative phosphorylation and ATP production?
What provides the energy for oxidative phosphorylation and ATP production?
What is the purpose of the Cori cycle?
What is the purpose of the Cori cycle?
What does beta-oxidation do to long chain fatty acids?
What does beta-oxidation do to long chain fatty acids?
What is the ATP yield from NADH and FADH2 in the electron transport chain?
What is the ATP yield from NADH and FADH2 in the electron transport chain?
What is the primary function of lactic acid in the body?
What is the primary function of lactic acid in the body?
What is the main function of enzymes in cellular respiration?
What is the main function of enzymes in cellular respiration?
Where is ATP synthesized anaerobically?
Where is ATP synthesized anaerobically?
What is the main function of high energy phosphate systems during exercise?
What is the main function of high energy phosphate systems during exercise?
Which macronutrient can generate ATP without oxygen?
Which macronutrient can generate ATP without oxygen?
Where does glycolysis produce 2 net ATP?
Where does glycolysis produce 2 net ATP?
What happens when glycolysis outpaces the electron transport chain's ability to process NADH?
What happens when glycolysis outpaces the electron transport chain's ability to process NADH?
Where does most ATP production occur in cellular respiration?
Where does most ATP production occur in cellular respiration?
What allows cells to rapidly change their ATP:ADP ratio?
What allows cells to rapidly change their ATP:ADP ratio?
What is the main function of the electron transport chain?
What is the main function of the electron transport chain?
Which metabolic pathway involves the conversion of pyruvate to acetyl-CoA?
Which metabolic pathway involves the conversion of pyruvate to acetyl-CoA?
What factors can affect substrate utilization during exercise?
What factors can affect substrate utilization during exercise?
Where does oxidative phosphorylation occur?
Where does oxidative phosphorylation occur?
What factors can enhance free fatty acid use in skeletal muscle mitochondria?
What factors can enhance free fatty acid use in skeletal muscle mitochondria?
What inhibits the Carnitine system, which transports fats into mitochondria?
What inhibits the Carnitine system, which transports fats into mitochondria?
What provides oxaloacetate to allow beta oxidation to keep running?
What provides oxaloacetate to allow beta oxidation to keep running?
What factors does the regulation of metabolic flux depend on?
What factors does the regulation of metabolic flux depend on?
What is the total ATP production from a triglyceride molecule with 3 fatty acids?
What is the total ATP production from a triglyceride molecule with 3 fatty acids?
Where does the bulk of ATP production occur in cellular respiration?
Where does the bulk of ATP production occur in cellular respiration?
What is the primary fuel used during high-intensity exercise?
What is the primary fuel used during high-intensity exercise?
What is the main function of lactic acid in the body?
What is the main function of lactic acid in the body?
What is the main source of energy for lower intensity, longer duration exercise?
What is the main source of energy for lower intensity, longer duration exercise?
What is the ATP yield from NADH in the electron transport chain?
What is the ATP yield from NADH in the electron transport chain?
What is the main function of the Cori cycle?
What is the main function of the Cori cycle?
What is the main function of the electron transport chain?
What is the main function of the electron transport chain?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
Where does the Krebs cycle occur?
Where does the Krebs cycle occur?
What is the result of high rate of glycolysis?
What is the result of high rate of glycolysis?
What provides the energy for oxidative phosphorylation and ATP production?
What provides the energy for oxidative phosphorylation and ATP production?
What is the net ATP yield from glycolysis in the cytosol?
What is the net ATP yield from glycolysis in the cytosol?
During which process is lactate formed?
During which process is lactate formed?
What is the primary function of the Krebs cycle?
What is the primary function of the Krebs cycle?
Where is ATP synthesized anaerobically?
Where is ATP synthesized anaerobically?
What is the main function of high energy phosphate systems during exercise?
What is the main function of high energy phosphate systems during exercise?
Which macronutrient is the only one that can generate ATP without oxygen?
Which macronutrient is the only one that can generate ATP without oxygen?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
What stimulates the breakdown of fat for energy use at different exercise intensities and durations?
Where does the majority of ATP production occur in cellular respiration?
Where does the majority of ATP production occur in cellular respiration?
What is the primary source of energy for lower intensity, longer duration exercise?
What is the primary source of energy for lower intensity, longer duration exercise?
How do enzymes contribute to cellular respiration?
How do enzymes contribute to cellular respiration?
What allows cells to rapidly change their ATP:ADP ratio?
What allows cells to rapidly change their ATP:ADP ratio?
What is the primary function of the Cori cycle?
What is the primary function of the Cori cycle?
Study Notes
Exercise Nutrition and Metabolism Overview
- Lecture covers cellular respiration, metabolism and exercise nutrition recommendations
- Energy is transformed between different forms, not created or destroyed
- Enzymes catalyze chemical reactions by lowering activation energy
- ATP is synthesized anaerobically through glycolysis and aerobically in the mitochondria
- Cells maintain a small ATP pool allowing rapid changes in ATP:ADP ratio, signaling increased metabolism
- High energy phosphate systems could sustain maximal exercise for about 10 seconds without replenishment
- Lecture discusses carbohydrate metabolism, glycolysis, glycogenolysis, aerobic and anaerobic glycolysis, and lactate formation
- Carbs are the only macronutrient that can generate ATP without oxygen
- Glycolysis produces 2 net ATP in the cytosol, most ATP comes from reactions in the mitochondria
- Lactate is formed when glycolysis outpaces the electron transport chain's ability to process NADH
- Lecture covers glycolysis, Krebs cycle, electron transport chain, oxidative phosphorylation, and effects of nutrition, fitness level, exercise intensity and duration on substrate utilization
- Analogies and schematics are used to explain biochemical pathways and processes
Exercise Nutrition and Metabolism Overview
- Lecture covers cellular respiration, metabolism and exercise nutrition recommendations
- Energy is transformed between different forms, not created or destroyed
- Enzymes catalyze chemical reactions by lowering activation energy
- ATP is synthesized anaerobically through glycolysis and aerobically in the mitochondria
- Cells maintain a small ATP pool allowing rapid changes in ATP:ADP ratio, signaling increased metabolism
- High energy phosphate systems could sustain maximal exercise for about 10 seconds without replenishment
- Lecture discusses carbohydrate metabolism, glycolysis, glycogenolysis, aerobic and anaerobic glycolysis, and lactate formation
- Carbs are the only macronutrient that can generate ATP without oxygen
- Glycolysis produces 2 net ATP in the cytosol, most ATP comes from reactions in the mitochondria
- Lactate is formed when glycolysis outpaces the electron transport chain's ability to process NADH
- Lecture covers glycolysis, Krebs cycle, electron transport chain, oxidative phosphorylation, and effects of nutrition, fitness level, exercise intensity and duration on substrate utilization
- Analogies and schematics are used to explain biochemical pathways and processes
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of exercise nutrition and metabolism with this quiz covering cellular respiration, energy transformation, ATP synthesis, carbohydrate metabolism, glycolysis, and the effects of nutrition and exercise on substrate utilization.
