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

---

Definitions:

Aging

Aging is the process of becoming older, encompassing a variety of biological, physical, psychological, and social changes over time.

Physical Condition

the state of a person's body, often relating to their level of fitness, health, and ability to perform physical activities.

Proper Diet

A balanced nutritional plan that provides the body with the essential nutrients, vitamins, and minerals required for optimal health and functioning.

Kubler-Ross

A model that outlines the five stages of grief (denial, anger, bargaining, depression, acceptance), originally described by Elisabeth Kübler-Ross.