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The resting membrane potential of a neuron (-70mV) is sustained due to the selective ion permeability of the membrane. At the resting potential, the membrane is slightly permeable to ions like sodium (Na+) and chloride (Cl−) and highly permeable to potassium ions (K+). Differences in the ions' concentration inside the cell compared to the outside are maintained by membrane transport proteins like channels and pumps.
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Negative membrane potentials potentiate multicellularity.

Chika Edward Uzoigwe1

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Evolution favored negative membrane potentials due to classical and quantum physical attractions, enabling multicellularity. These forces overcome cell repulsion, driving the aggregation of negatively charged cells.

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Area of Science:

  • Biophysics
  • Evolutionary Biology
  • Physical Chemistry

Background:

  • Cells possess negative membrane potentials, and membrane phospholipids are also negatively charged.
  • Multicellularity presents challenges, including nutrient diffusion limitations and waste accumulation, making it initially maladaptive.
  • The evolutionary advantage of negative membrane potentials over positive ones remains unexplained.

Purpose of the Study:

  • To propose a hypothesis for the initiation and stabilization of multicellularity.
  • To explain the exclusive selection of negative membrane potentials in evolution.
  • To elucidate the role of physical processes in the emergence of multicellular life.

Main Methods:

  • Review of classical physical phenomena governing charged particle interactions in water.
  • Analysis of quantum mechanical effects at interfaces, specifically focusing on hydrogen bonding and nuclear quantum effects.
  • Hypothesizing the interplay between classical and quantum attraction in cellular aggregation.

Main Results:

  • Negatively charged particles exhibit classical attraction in water due to water molecule orientation, facilitating long-range aggregation.
  • Quantum attraction arises at closer interfaces, driven by accentuated quantum nuclear effects in interfacial water.
  • Classical and quantum attractions synergistically initiate and stabilize multicellular structures.

Conclusions:

  • Multicellularity may have emerged driven by classical and quantum physical attractions, not solely biological selection.
  • The negative membrane potential is crucial for these physical attractions to overcome charge repulsion.
  • Hydrogen's isotopic properties are essential for the observed quantum effects driving multicellularity.