Imagine a Hypothetical Pathway in Which Precursor X and Precursor

question 44

Multiple Choice

Imagine a hypothetical pathway in which precursor X and precursor Y are combined by enzyme Z in order to produce neurotransmitter XYZ. Which of the choices below would represent feedback inhibition?

• A) Increasing levels of X or of Y lead to a reduction in activity of enzyme Z.
• B) Increasing levels of enzyme Z lead to an increase in levels of XYZ.
• C) Increasing levels of enzyme Z lead to a reduction in availability of X and Y.
• D) Increasing levels of XYZ lead to an increase in the availability of X.
• E) Increasing levels of XYZ lead to a reduction in the activity of enzyme Z.

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Definitions:

Overhead Account

An account used to record the indirect costs of a business, which are not directly attributable to a specific product or service.

Overabsorbed Overhead

The amount of overhead applied is greater than actual overhead cost incurred.

Prospective Overhead Rate

An estimated rate used to allocate overhead costs to products or services based on future expected activities and expenditures.

Fixed Overhead

Fixed costs that do not fluctuate with the level of production or sales, such as rent, salaries, and insurance, required to run a business's operations.