What Happens When a Stop Codon Is Reached by a Ribosome

question 50

Multiple Choice

What happens when a stop codon is reached by a ribosome (in the A site) ?

• A) A termination tRNA^ter binds to the codon and is used to release the growing peptide from the P site tRNA. The ribosome then dissociates.
• B) A termination tRNA^ter binds to the codon and the growing peptide is transferred to it. When the peptidyl-tRNA^ter reaches the P site, the ribosome is signaled to release the protein. The ribosome then dissociates.
• C) A termination protein binds to the codon and is used to release the growing peptide from the P site tRNA. The ribosome then is likely to dissociate.
• D) A termination protein binds to the codon and the ribosome dissociates. A separate peptidyl transferase then releases the protein from the last tRNA to which was attached.

---

Definitions:

Short-Term Scheduling

The process of organizing, managing, and allocating resources and tasks over a short period, aiming to enhance efficiency and meet specific objectives.

Process Choices

The selection among various methods or techniques for performing work or producing goods, often based on efficiency, cost, or quality considerations.

Short-Term Scheduling

The process of planning and organizing tasks and workloads within a short timeframe, often focusing on efficiency and resource allocation.