After Controlling for Z, a Researcher Finds Evidence of a Direct

question 30

Multiple Choice

After controlling for Z, a researcher finds evidence of a direct relationship between X and Y. What step should be taken next?

• A) Z should become the new independent variable
• B) Z should become the new dependent variable
• C) Z should be disregarded and a new control variable should be selected
• D) Z should be disregarded and a new independent variable should be selected

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Definitions:

Dynein

is a motor protein in cells which converts chemical energy into mechanical force, moving along microtubules and playing roles in cell division and transport of cellular cargo.

Microtubules

Tubular structures that make up part of the cytoskeleton in all eukaryotic cells, providing shape, support, and facilitating cell division and intracellular transport.

Mitochondria

Organelles within eukaryotic cells that produce ATP through cellular respiration, often referred to as the powerhouse of the cell.

Energy Production

The process of creating energy, typically within organisms by metabolizing nutrients, or through technological means such as electricity generation.