While waiting for a signal to contract, a muscle cell membrane will maintains a slightly higher positive charge on the OUTSIDE of the membrane. This is possible only because SODIUM POTASSIUM ATPASE pumps are available to generate this charge difference.
The ion concentration difference across the plasma membrane set up electric signals called action potentials which cause a muscle cell to contract.
This answer is true as can be!
Answer:
E. Air Mass
Explanation:
The definition of an air mass is "a body of air with horizontally uniform temperature, humidity, and pressure."
The two energy equivalent molecules that contains phosphates
as part of their structure are ATP which is adenosine triphosphate and GTP which
is guanosine triphosphate. Both of these two have three phosphates and two high
energy bonds. In GTP, they are certain to guanosine while in ATP, the phosphate
groups are certain to adenosine.
The answer is that it is True. It is true because the earth has been around for millions of years, and water has been around for just as long. hope this answer helps!
