Which Ions Directly Control the Contraction of Muscles

question 5

Multiple Choice

Which ions directly control the contraction of muscles?

• A) Sodium
• B) Potassium
• C) Calcium
• D) Magnesium

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Definitions:

Labour Rate Variance

The difference between the actual cost of labor and the expected (or standard) cost, based on the hours worked.

Direct Material Units

Refers to the physical units of raw materials that are directly traceable and integral to the finished product.

Standard Costing

A cost accounting method that assigns a fixed cost to inventory and measures any variances to actual costs.

Labour Efficiency Variance

The difference between the actual labor hours used and the standard labor hours expected for the level of production achieved, often related to workforce productivity.