Two TRNA Molecules Occupy the P and a Sites in a Ribosome

question 50

Multiple Choice

Two tRNA molecules occupy the P and A sites in a ribosome. The amino acids they carry are joined by a peptide bond. What is the very next event that occurs?

• A) The tRNA in the P site detaches and leaves the ribosome.
• B) A third tRNA enters the ribosome.
• C) The ribosome moves one codon down the mRNA.
• D) The large subunit leaves the ribosome.
• E) A new amino acid is joined to the tRNA in the P site.

---

Definitions:

Exchange Network

A social structure that consists of individuals or entities sharing resources and services through a system of transactions.

Group Polarization

In group decision making, the tendency for group members to shift their opinions toward a position that is similar to but more extreme than the positions they held prior to group discussion; both the risky shift and the cautious shift are instances of group polarization.

Risky Shift

In group decision making, the tendency for decisions made in groups after discussion to be riskier than decisions made by individual members prior to discussion.

Risk Avoidant

Characterizes individuals or strategies that prioritize minimizing potential losses or risks.