Question

because of the increased oxygen use and atp production during aerobic training, muscle cells will increase their number of _______.

o mitochondria
o t tubules
o nucleoli
o lysosomes

need help? review these concept resources.

rate your confidence to submit your answer.
high medium low

reading

© 2025 mcgraw hill. all rights reserved. privacy center terms of use

Explanation:

Mitochondria are the power - houses of the cell, responsible for aerobic respiration and ATP production. During aerobic training, with increased oxygen use and ATP demand, muscle cells increase the number of mitochondria to meet energy needs. T - tubules are involved in muscle contraction, nucleoli are related to ribosome synthesis in the nucleus, and lysosomes are for waste breakdown.

Answer:

mitochondria