Why Is Hydrogen Burning the Main Energy Source for Main-Sequence

question 71

Essay

Why is hydrogen burning the main energy source for main-sequence stars? Give at least two reasons.

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Definitions:

Cross-bridge

The connection formed between the heads of myosin filaments and actin filaments during muscle contraction.

Repolarization

The process of restoring the resting negative charge inside a cell's membrane after depolarization, crucial for nerve and muscle function.

Depolarizes

Depolarization refers to the process in which a cell's membrane potential becomes less negative, a crucial step in the propagation of nerve impulses.

Resting Membrane Potential

The electrical charge across a neuron's plasma membrane when the neuron is not actively transmitting signals.