This Table Shows Which of These Four Genes Are on or Off

question 4

Multiple Choice

This table shows which of these four genes are on or off in three different cell types.
Why is the expression of the rRNA gene so different from the expression of the other genes in the table?

• A) rRNA is required for the proper functioning of all cells, but the products of the other genes are only essential to the function of one cell type.
• B) rRNA is easier to produce than the products of the other genes.
• C) The rRNA gene is found in the genomes of all three cell types, but the other genes are only found in the genomes of their specific cell type.
• D) rRNA is needed at all stages of the cell cycle, but the products of the other genes are only needed during cell division.

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Definitions:

Elasticity Value

A measure in economics indicating how the quantity demanded or supplied of a good responds to changes in price or income.

Inelastic Demand

A situation in which the quantity demanded of a good or service changes by a relatively small amount in response to a change in its price.

Price Elasticity

An indicator of the extent to which the demand for a product is affected by variations in its cost.

Midpoint Formula

A method for calculating the price elasticity of demand or supply by averaging the starting and ending prices and quantities to estimate the percentage change.