Question

a student notes some events of the cell cycle in the table. drag the name of the stage in which each event occurs into the table. a stage can be used more than once.

event
the nuclear envelope disintegrates.
dna is duplicated.
the cell grows larger and makes more proteins.
dna condenses to form chromosomes.

stage

Explanation:

• "The cell grows larger and makes more proteins": This occurs in the \( G_1 \) (Growth 1) phase of the cell cycle. In \( G_1 \), the cell increases in size, synthesizes proteins, and prepares for DNA replication.
• "DNA is duplicated": This is the key event of the \( S \) (Synthesis) phase. During \( S \)-phase, the cell replicates its DNA so that each daughter cell will have a complete set of genetic material.
• "DNA condenses to form chromosomes": This is part of mitosis. Specifically, in the prophase of mitosis, the loosely - packed chromatin (DNA and associated proteins) condenses into distinct chromosomes.
• "The nuclear envelope disintegrates": This also happens during mitosis, specifically in the prophase. The breakdown of the nuclear envelope allows the spindle fibers to interact with the chromosomes.

Answer:

Event	Stage
DNA is duplicated	\( S \)
DNA condenses to form chromosomes	Mitosis (Prophase)
The nuclear envelope disintegrates	Mitosis (Prophase)