Question

The human body stores chemical energy from digested food. Some of the chemical energy is converted into mechanical energy when the body moves. Which statement is best supported by this information?

The body does not convert chemical energy to thermal energy. 

The body does not convert chemical energy to kinetic energy.  

Digested food is a source of potential energy.

  Digested food is a form of radiant energy. 

Answer 1

Answer;

Digested food is a source of potential energy.

Explanation;

-The chemical energy in food is released while the food is being digested and the molecules of food are broken down into smaller pieces. As the bonds between the atoms of the food break or loosen, new substances are created as a result of the chemical reactions taking place.

-Digestion involves both physical and chemical changes. During digestion, the chemical energy found in our food can be converted to many different forms. The chemical energy in food can be converted to another form of chemical energy when it is stored as glucose or fat. It can be converted to thermal energy because our body produces heat when digesting our food. The chemical energy in our food can also be converted to mechanical energy in the form of muscle movement.

Answer 2

The digestion involves the breakage of atomic bond which is stored in the form of chemical energy (type of potential energy). Hence, the statement "Digested food is a source of potential energy" is the  best explanation.

The biological process in which the larger and complex food molecules break downs into the smaller molecules, is known as digestion.

• During digestion, the atomic bonds break to release some amount of energy. This energy is known as chemical energy. Chemical can be convertible to thermal energy, as body produces heat during the process of digestion. Hence, the statement is not the correct explanation for the digestion.
• Since kinetic energy is the energy associated with the speed. The chemical energy during the digestion is converted to mechanical energy during the movement of body parts. Also, there is a conversion of chemical energy into kinetic energy. Hence, the statement is invalid.
• Chemical energy involved during the process of digestion is a type of potential energy, which can be converted into kinetic energy as discussed above. Hence, the statement justifies the digestion process.
• Digested food is a form of potential energy, not the radiant energy. Hence, the statement is invalid.

Thus, we can conclude that the digestion involves the breakage of bond which is stored in the form of chemical energy (type of potential energy). Hence, the statement "Digested food is a source of potential energy" is the  best explanation.

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