Make observations about how the different body systems work in the Metabolism Sim. Record your observations below. Then press NEXT to use what you learned—from your observations and the classroom body systems model—to continue this activity and answer questions about the body.

Launch the Metabolism Simulation, select HEALTHY BODY, and select OBSERVE.
Feed the body sandwiches (which provide a mix of molecule types).
Focus on what happens to starch in the digestive system.

Turn off all the molecules except for starch and glucose. What do you observe?