Place the following statements in the correct order for an action potential to be generated.1) an action potential is generated2) excitatory postsynaptic potential (espn's) are received3)voltage gated na+ channels open4) the cell reaches threshold5) a neuron starts at its resting membrane potential6) na+ flows into the cell making the inside more positive

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean