Question

When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released.

Which identifies the energy transformations that take place in Anna’s body as this process takes place?

Mechanical energy is converted to kinetic energy, which is then converted to potential energy.
Chemical energy is converted to thermal energy and electrical energy.
Electrical energy is converted to chemical energy and thermal energy.
Mechanical energy is converted to potential energy which is then converted to kinetic energy.

Answer 1

chemical energy is converted to thermal energy and electrical energy

Answer 2

Chemical energy into thermal energy and electrical energy. (option 2)

• When Anna eats an apple, the body absorbs all the carbohydrates from it during digestion.
• These carbohydrates, mainly glucose is then broken down by the body cells using enzymes to give chemical energy.
• This chemical energy is used in various parts of the body. The heart uses this energy by converting it into electrical energy in the SA node which stimulates the heartbeat.
• The chemical energy is also converted to heat energy by various processes to keep the body temperature optimal.