ATP DEFINITELY.
Explanation:
In anaerobic respiration like glycolysis, ATP is needed to split glucose
in the aerobic respiration, same thing. Krebs cycle needs transporters to make ADP and convert it into ATP.
<span>As an action potential reaches a muscle cell, it triggers calcium to release from the sarcoplasmic reticulum of the cells. The calcium ions then flow into the cytoplasm and bind to the troponin and tropomyosin molecules in the actin filaments of the muscle cells.</span>
Hello!
Janna will not be able to use the energy through exercise and her heart and lungs will not be able to become as strengthened.
Hope this helps!
Answer:
I think it is brain or heart
but I don't know please don't give bad rating:(