A)contract.
B)produce more ATP with little oxygen.
C)store extra DNA for metabolism.
D)produce large amounts of the muscle proteins needed for muscle contraction.
E)All of the answers are correct.

A)lack a plasma membrane.
B)have many nuclei.
C)are very small.
D)lack mitochondria.
E)All of the answers are correct.

A)The contractions of skeletal muscles pull on tendons and move bones of the skeleton.
B)Skeletal muscles store nutrient reserves.
C)Skeletal muscles are responsible for the pumping action of the heart.
D)Skeletal muscles support the weight of some internal organs.
E)Skeletal muscle contractions help maintain body temperature.