When Using LacZ as a Reporter Gene, Researchers Add X-Gal

question 75

Multiple Choice

When using lacZ as a reporter gene, researchers add X-Gal to the substrate.What would happen if they didn't?

• A) The transformed cells would die.
• B) Untransformed cells would survive.
• C)  -galactosidase would not be produced.
• D)  -galactosidase would be inactivated.
• E) One could not easily see which cells had  -galactosidase.

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Definitions:

Allowance for Doubtful Accounts

A contra-asset account used to estimate the portion of accounts receivable that may not be collected.

Percentage of Receivables

A method for estimating the allowance for doubtful accounts based on the expected percentage of accounts receivable that may not be collectible.

Write Offs

Financial accounting action where the value of an asset is declared worthless, removing it from balance sheet accounts due to loss or impairment.