Lesson 2: Bioenergetics & The Cost of Work
Duration of Days: 4
Lesson Objective
Students will analyze how ATP is produced and consumed during varying intensities of exercise to explain muscle fatigue.
How does the body transform a meal into a movement? Why does "the burn" happen during a workout?
ATP, Creatine Phosphate, Aerobic Respiration, Anaerobic Glycolysis, Lactic Acid, Oxygen Debt.
HS-LS1-7 (Energy Transfer and Cellular Respiration).
Interpreting multiline graphs (e.g., O2 consumption vs. time); calculating percentage changes in energy output.
Description: An investigation into the metabolic "fuel" of the body.
Purpose: To connect chemical energy to mechanical work.
DOK Level 3.
"Carb-loading" strategies for local marathons vs. the high-protein needs for muscle hypertrophy in weightlifting.
The belief that lactic acid stays in the muscle for days and causes soreness (Clarify: it clears in about an hour; micro-tears cause the 24-hour ache).
Choice board: write a "day in the life of a glucose molecule" or create a "metabolic map" comparing a sprinter to a hiker.
Data Analysis Lab: Predicting the "failure point" of a muscle based on provided energy-depletion charts.
Respirometers or CO2 sensors; "The Science of Sport" video series.