B
Carbohydrates are needed for builiding material
With each contraction cycle, actin moves relative to myosin. ... ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur. Therefore, without ATP, muscles would remain in their contracted state, rather than their relaxed state.
Answer:
D
Explanation:
a statement that can be tested through a scientific investigation
Explanation:
if u read the passage then u would know it so i prefer going thru passage and reading questions
