Answer:
Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.
What compound do plants get from their roots for photosynthesis?
options:✨✨✨
Carbon Dioxide
Oxygen
Glucose
Water
If a flower is not pollinated what will happen?
Answer:
Will die?
Explanation: