AP BIOLOGY

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. These organelles, commonly referred to as the cell’s “power plants, ” convert nutrients into the molecule ATP, which stores energy.

Detailed explanation-2: -What cells have the most mitochondria? A. Your heart muscle cells – with about 5, 000 mitochondria per cell. These cells need more energy, so they contain more mitochondria than any other organ in the body!

Detailed explanation-3: -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-4: -Muscles cells contain a large number of mitochondria because muscle tissues require a large amount of energy for movement and especially during exercise. Since ATP is produced by mitochondria, muscles cells have a large number of mitochondria to fulfill the energy requirements.

Detailed explanation-5: -Although far less well studied, the mitochondria within smooth muscle are thought to play a role in maintaining vascular tone, facilitating cellular transport, and producing energy for vascular cell secretion (42, 46). These mitochondria typically comprise 3∼5% of the smooth muscle cell volume (3).