The correct response is a. Resting membrane potential (RMP). RMP describes the electrical potential difference across a cell membrane when the cell is not active. This difference arises due to the uneven distribution of ions such as Na⁺, K⁺, Cl⁻, and Ca²⁺ across the plasma membrane. It is influenced by the concentration gradients and the permeability of the membrane to these ions. The RMP value can vary by cell type; for example, a neuron's RMP is around -70 mV, whereas in skeletal muscle, it is about -90 mV. A negative value indicates a higher concentration of negative charges inside the cell compared to the outside.
The progression of biology outlines the evolution of life studies from ancient eras to contemporary times.
