-What Is the Structure Indicated by the Number 2 in Figure

question 125

Multiple Choice

-What is the structure indicated by the number 2 in Figure 12.1 and what is its functional significance?

• A) H zone : area of myosin not overlapped by actin
• B) M line : where the tails of the myosin molecules are bound to one another
• C) Z line : anchors the thin filaments together
• D) sarcomere : the functional unit of muscle contraction whose length is changed as a muscle shortens and lengthens
• E) A band : length of myosin attached to an M line

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Definitions:

Marginal Propensity

The fraction of an additional unit of income that is spent on consumption rather than being saved.

Consumption Function

The relationship in the economy between consumption and income, other things constant.

Saving Function

The relationship between the level of saving and the level of income, typically showing that saving increases as income increases.

Consumption Function

An economic formula that expresses the relationship between total consumption and gross national income, indicating how much households are likely to spend.