You Have Generated Antibodies That Recognize the Extracellular Domain of the Ca²⁺-Pump.Adding

question 26

Multiple Choice

You have generated antibodies that recognize the extracellular domain of the Ca²⁺-pump.Adding these antibodies to animal cells blocks the active transport of Ca²⁺ from the cytosol into the extracellular environment.What do you expect to observe with respect to intracellular Ca²⁺?

• A)Ca²⁺-pumps in vesicle membranes keep cytosolic calcium levels low.
• B)Ca²⁺-pumps in the endoplasmic reticulum membrane keep cytosolic calcium levels low.
• C)Ca²⁺-pumps in the Golgi apparatus keep cytosolic calcium levels low.
• D)Ca²⁺ concentrations in the cytosol increase at a steady rate.

---

Definitions:

Variable Manuf. Overhead

Costs that vary with the level of production, such as indirect materials and utilities used in manufacturing.

Variable Overhead Spending Variance

The difference between actual variable overhead costs and the budgeted costs for the actual level of activity, indicating overspending or underspending.

Labour Efficiency Variance

The difference between the budgeted labor hours or costs and the actual labor hours or costs incurred.