When the Ribosome Reaches a Stop Codon on the MRNA

question 22

Multiple Choice

When the ribosome reaches a stop codon on the mRNA, no corresponding tRNA enters the A site. If the translation reaction were to be experimentally stopped at this point, which of the following would you be able to isolate?

• A) an assembled ribosome with a polypeptide attached to the tRNA in the P site
• B) separated ribosomal subunits, a polypeptide, and free tRNA
• C) an assembled ribosome with a separated polypeptide
• D) separated ribosomal subunits with a polypeptide attached to the tRNA
• E) a cell with fewer ribosomes

Recognize the applicability and limitations of overhead allocation methods in both manufacturing and service companies.

Understand the fundamentals of activity-based costing and how activity rates are computed.

Recognize the use of ABC information in identifying cost improvement opportunities.

Grasp the method of calculating estimated total factory overhead cost for a product using ABC.

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Definitions:

Variable Costs

Expenses that change in proportion to the activity of a business, such as materials and labor costs.

Fixed Costs

Expenses that do not change with the level of goods or services produced over the short term, such as rent, salaries, and insurances.

Selling Price

The amount of money for which a product or service is sold to customers.

Variable Costs

Costs that vary directly with the level of production or service volume, such as materials and labor.