Which of the Following Is the Correct Sequence That Describes

question 50

Multiple Choice

Which of the following is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?
1) Tropomyosin moves and uncovers 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

Understand the concept and implications of price ceilings and floors in markets.

Comprehend the effects of binding minimum wages on labor market outcomes, including employment levels.

Recognize the demographic most affected by minimum wage laws.

Evaluate the precision and effectiveness of minimum-wage laws in targeting low-income workers.

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