Question

1. what does the cell question at each checkpoint before moving onto the next phase of the cell cycle?

artículo arrastrable\tpartida correspondiente
gap 2 (g2)\tis the cell ready for dna synthesis to occur?
metaphase (m)\tis the cell ready for mitosis with properly copied dna and centrioles available?
gap 1 (g1)\tare sister chromatids lined up properly, and attached to their spindle fibers?

Explanation:

To solve this, we match each cell cycle checkpoint (Gap 2 (G2), Metaphase (M), Gap 1 (G1)) with the correct question by understanding the purpose of each checkpoint:

• Gap 2 (G2) Checkpoint: Checks if the cell is ready for DNA synthesis? No, G2 is after DNA synthesis (S phase) and before mitosis. Wait, correction: G2 checkpoint actually checks if DNA replication (in S phase) was successful and if the cell has enough resources for mitosis. But the given question for G2 is "Is the cell ready for DNA synthesis to occur?" No, that's incorrect. Wait, maybe a translation or label mix - up. Wait, the correct G2 checkpoint question should be about DNA replication completion. But the given options: Let's re - evaluate.

Wait, the table has:

• Gap 2 (G2) row with question "Is the cell ready for DNA synthesis to occur?" → No, G1 is before S (DNA synthesis), so G1 should check if cell is ready for S. So likely a mislabel. But following the table:

• Metaphase (M) Checkpoint: Checks if sister chromatids are lined up properly and attached to spindle fibers? Yes, that's the metaphase (spindle) checkpoint.

• Gap 1 (G1) Checkpoint: Checks if the cell is ready for DNA synthesis (S phase) to occur? Yes, G1 is the checkpoint before S phase, where the cell checks for growth, nutrients, etc., to enter S.

Wait, the table's "Partida correspondiente" (matching item) needs to be aligned:

1. Gap 2 (G2) should match with "Is the cell ready for mitosis with properly copied DNA and centrioles available?" Because G2 is after S (DNA synthesis), so it checks if DNA is copied correctly and the cell is ready for mitosis.

1. Metaphase (M) should match with "Are sister chromatids lined up properly, and attached to their spindle fibers?" (This is the spindle assembly checkpoint in metaphase, ensuring chromosomes are aligned before anaphase).

1. Gap 1 (G1) should match with "Is the cell ready for DNA synthesis to occur?" (G1 is the checkpoint before S phase, so it determines if the cell will enter S phase for DNA replication).

So the correct matches (drag - and - drop) are:

• Gap 2 (G2) → Is the cell ready for mitosis with properly copied DNA and centrioles available?
• Metaphase (M) → Are sister chromatids lined up properly, and attached to their spindle fibers?
• Gap 1 (G1) → Is the cell ready for DNA synthesis to occur?

Answer:

• Gap 2 (G2) : Is the cell ready for mitosis with properly copied DNA and centrioles available?
• Metaphase (M) : Are sister chromatids lined up properly, and attached to their spindle fibers?
• Gap 1 (G1) : Is the cell ready for DNA synthesis to occur?