Brenda and her friend are relaxing in a paddleboat, slowly working the paddles with their legs to move the boat. which organelles in the muscle cells of brenda’s legs enable brenda to have the energy for this activity?

The correct answer is mitochondria.  

All the cells require energy in order to work, however, the cells of the muscles possess an unusually greater need for energy. The muscles go through vigorous activity and such amount of energy provided by the organelles known as mitochondria.  

These known as the powerhouse of the cells, transform glucose into ATP that is a molecule, which can accumulate huge concentrations of easily accessible energy. The muscle cells comprise a huge amount of mitochondria in comparison to any other kind of cell so that they can forcefully and briskly react towards the continuous body requirement for different kinds of movement.  

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.