An Infectious Substance Capable of Causing Disease in Plants Is

question 54

Multiple Choice

An infectious substance capable of causing disease in plants is isolated and researchers want to determine whether the substance is a bacterium or a virus. Which of the following methods will best allow them to determine the type of infectious agent they have isolated?

• A) Treat the substance with enzymes that destroy all nucleic acids, and then determine whether the substance is still infectious.
• B) Culture the substance with plant cells, and then determine whether the cells lyse.
• C) Treat the sample with proteases that digest all proteins, and then determine whether the substance is still infectious.
• D) Culture the substance on nutritive medium, away from any plant cells.

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Definitions:

Ending Balance

The ending balance is the final amount in an account at the conclusion of a period after all debits and credits have been accounted for.

Unit Product Cost

The total cost (fixed and variable) divided by the number of units produced, representing the cost per single unit of product.

Completed Job Cost Sheet

A document detailing the total cost associated with completing a specific job, including materials, labor, and overhead.

Manufacturing Overhead

All manufacturing costs other than direct materials and direct labor, includes costs like factory rent, utilities, and machine depreciation.