Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are called

Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are known as ion pumps and transporters. Pumps creating a membrane potential across the biological membrane which helping ions to move against a concentration gradient.

Ion pumps are classified into two types based on their method which they are using to move:

1) Primary active transport: They are trans-membrane ATpases, for transport ions up a concentration gradient they hydrolyze the ATP to produce energy.

2) Secondary active transport: They transport the molecules across the cell membrane through the electrochemical gradient generated by pumping out of the cell.

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,

answer; motor (efferent)neurons;