Released STAAR Biology EOC · 2026 · Item 22 · 1 point

Walkthrough: Biology 2026, Item 22

B.6C · Cell Cycle Disruptions · unscored study

The model shows some of the events that take place when a cell reaches the $G_2$ checkpoint in the cell cycle. How should the model be completed to show the MOST LIKELY outcome for this cell?

DNA damage is found. → DNA repair is attempted. → DNA repair fails. →

Answer bank: Apoptosis takes place., Cell returns to $G_1$ checkpoint., Cell turns into a tumor., New DNA is synthesized.

1. Understand the question

Follow the model at the $G_2$ checkpoint: DNA damage is found, repair is attempted, and repair fails. What does a healthy cell do next?

Try the question on your own first, then reveal one step at a time.

2. Solve it step by step

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Question, artwork, answer key and rationale: Texas Education Agency released STAAR test. Walkthrough steps written by TEKSForge. Studying here does not change your mastery or scores.