Figure 10-2 Muscle Contractions

question 110

Multiple Choice

Figure 10-2 Muscle Contractions

Use Figure 10-2 to answer the following questions:
-What is thought to happen in a muscle during the response shown in graph (a) ?

• A) It is strengthening with exercise.
• B) There is a gradual increase in calcium ion concentration in the sarcoplasm.
• C) It is fatigued and must make repeated efforts to twitch normally.
• D) It is aged and has lost contractile proteins.
• E) It is producing more ATP as tension increases.

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Definitions:

Pooled Estimator

A statistical method used to estimate the mean of two or more groups by assuming that they have the same variance.

Weighted Average

An average where each data point contributes to the final average in proportion to its importance or frequency.

Pooled Sample Variance

An estimate of the variance of two or more populations under the assumption that they have the same variance, calculated by pooling the variances of these samples.

Independent Samples

Two or more groups of samples that are selected from populations such that the selection of a sample does not influence the selection of the other samples.