Primary structure. The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. The primary structure is held together by peptide bonds that are made during the process of protein biosynthesis.

5 0

2 years ago

The membrane has open K channels, and changing extracellular K concentration results in a change in membrane potential. Changing

MrRissso [65]

Answer: Closed

Explanation:

At resting membrane potential( RMP) sodium channels remained shut, this is because , previously in depolarisation,the voltage gated sodium channels were opened for sodium to diffuse into the Axon. However these channels closed after reaching their refractory period,s.

Therefore a change in the extracellular concentration of sodium will not open them

3 0

3 years ago