<span>Answer: Opening of Na+ and K+
Explanation:
Acetycholine binding opens Na+ and K+ ion channels in the receptors that allow simultaneous passage of Naâş into the muscle fiber and Kâş out of the muscle fiber. More Naâş ions enter than Kâş ions exit, which produces a local change in the membrane potential called the end plate potential.
Binding of acetycholine to receptor proteins opens Na+ and K+ channels resulting in jump in resting membrane potential(RMP) from -90mV to +75mV forming an end-plate potential (EPP).</span>
Answer:
A.the foundation of most food chains.During photosynthesis plants let out oxygen and gain carbon dioxide from the atmosphere which intern helps plants to manufacture food.
A dive instructor begins his leson on the shore as he guides his student out into the water what zone are they in
The La Brea Tar Pits preserve organisms for years.
