Question

The form of energy used in respiration is
A)Chemical energy
B)Electrical energy
C)Mechanical energy
D)Radiant energy

Answer 1

Hint: Respiration is a process in which the air from the environment moves into the body of an organism and then moves into cells and tissues. It helps the cells to carry out all the biochemical activities.

Complete answer:
Our body needs energy to do work. The cells need energy to carry out their functions. Both require energy, the energy is supplied to them in different ways.
Humans eat food to get energy. The nutrients in the food are further divided in the body by various enzymes and juices to produce glucose, which ultimately gives energy to the body.

The cells require ATP ( adenosine triphosphate) to perform basic functions. ATP is the energy currency of the cell which is produced by mitochondria.
Cellular respiration on the other hand can be produced both anaerobically and aerobically.
In aerobic respiration, the glucose which is produced by the breakdown of nutrients reacts with oxygen present in the body and then forms ATP , which is further used by cells. Water and carbon dioxide are the byproducts.

In anaerobic respiration, water, carbon dioxide and lactic acid are the byproducts. The reactants are only Glucose.
Cellular respiration produces chemical energy in order to give energy to the body.

Hence, the correct answer is option (A)

Note: Mechanical energy is the sum of an object’s kinetic energy and potential energy.
Electrical energy is produced due to a current.
Radiant energy is produced by electromagnetic radiation.