Which of the Following Is the Correct Sequence That Describes

question 58

Multiple Choice

Which of the following is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?
1) Tropomyosin shifts and unblocks the cross-bridge binding sites.
2) Calcium is released and binds to the troponin complex.
3) Transverse tubules depolarize the sarcoplasmic reticulum.
4) The thin filaments are ratcheted across the thick filaments by the heads of the myosin molecules using energy from ATP.
5) An action potential in a motor neuron causes the axon to release acetylcholine, which depolarizes the muscle cell membrane.

• A) 1 → 2 → 3 → 4 → 5
• B) 2 → 1 → 3 → 5 → 4
• C) 2 → 3 → 4 → 1 → 5
• D) 5 → 3 → 1 → 2 → 4
• E) 5 → 3 → 2 → 1 → 4

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Definitions:

Economic Profit

The difference between total revenue and total costs, including both explicit and implicit costs.

Dominant Strategy

In game theory, a strategy that is best for a player regardless of the strategies chosen by other players.

Individual Profits

The net gain in monetary terms realized by an individual or a single business entity from its investment or business operations.

Nash Equilibrium

A concept in game theory where no player can benefit by changing strategies if the strategies of the other players remain unchanged.