A Collection of Genes and Operons Whose Expression Is Controlled

question 35

Multiple Choice

A collection of genes and operons whose expression is controlled by a single protein is called a(n)

• A) regulon.
• B) monocistronic message.
• C) polycistronic message.
• D) intron.
• E) exon.

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Definitions:

Shutdown Rule

A short-term economic decision rule stating that a firm should continue operating if the revenue covers variable costs, even if it cannot cover fixed costs in full.

Average Variable Cost

The variable cost (such as raw materials, direct labor) per unit of output, calculated by dividing total variable costs by the quantity of output.

Zero Output

A situation where a business or economic process results in no production or creation of goods or services, often indicating a shutdown or inefficiency.

Profit Maximizing

refers to a firm's goal of achieving the highest possible profit, where marginal costs equal marginal revenue, guiding pricing and production decisions.