EVERYDAY SCIENCE

Detailed explanation-1: -During strenuous exercise, the rate of energy use in skeletal muscles can increase by more than 100-fold almost instantly. To meet this energy demand, muscle cells contain mitochondria.

Detailed explanation-2: -Muscles require a large amount of energy to function. This is provided primarily by mitochondria in cells that consume a lot of energy. We therefore find more of these powerhouses of the cell in muscle cells than in other cell types with a lower metabolic rate.

Detailed explanation-3: -Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. The process is called oxidative phosphorylation and it happens inside mitochondria.

Detailed explanation-4: -Muscles use the stored chemical energy of food we eat and convert that to heat and energy of motion (kinetic energy). We need energy to enable growth and repair of tissues, to maintain body temperature and to fuel physical activity. Energy comes from foods rich in carbohydrate, protein and fat.

Detailed explanation-5: -Answer and Explanation: It is generally believed that the cells that have the most mitochondria in them are the muscle cells. The mitochondria are the energy-producing organelles of the cell, so the tissues of the body that are involved with the most energy productive have the most mitochondria.