In an Experiment,a Researcher Manipulates One Variable to See How

question 1

Multiple Choice

In an experiment,a researcher manipulates one variable to see how it affects a second variable.The second variable,which is observed for any possible effects,is called the __________.

• A)dependent variable
• B)control variable
• C)independent variable
• D)hypothetical variable

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Definitions:

Troponin

A complex of three regulatory proteins integral to muscle contraction in skeletal and heart muscles.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that is involved in muscle activation, memory, and cognition.

T Tubules

Transverse tubules; system of inward extensions of the muscle fiber plasma membrane.

ATP

The energy necessary for metabolic processes in cells is transported by a molecule called adenosine triphosphate, or ATP.