Question

question 9
what happens to a cell prior to metaphase in mitosis?

• the dna wouldve been replicated, chromosomes formed, and the nuclear membrane broken down
• the dna wouldve been replicated chromosomes separated
• the chromosomes lined up in the middle and started separating
• the nuclear membrane re-forms and the chromosomes triple in size

question 10
in what stage of the cell cycle does dna make a copy of itself?

• interphase
• telophase
• metaphase
• prophase

Explanation:

Analyze events prior to metaphase

Using the DNA Replication, Cell Cycle Phases, and Mitosis Stages knowledge points

• Prior to metaphase, the cell must replicate its DNA (during S phase of interphase), condense chromatin into visible chromosomes, and break down the nuclear envelope (during prophase).
• The first option correctly describes these preparatory events: DNA replication, chromosome formation, and nuclear membrane breakdown.

Identify the stage of DNA replication

Using the DNA Replication and Cell Cycle Phases knowledge points

• DNA replication occurs during the S (Synthesis) phase, which is a part of interphase.
• Therefore, the cell makes a copy of its DNA during interphase.

Answer:

Question 9

• (A) the DNA would've been replicated, chromosomes formed, and the nuclear membrane broken down (Correct answer)
• (B) the DNA would've been replicated chromosomes separated
• (C) the chromosomes lined up in the middle and started separating
• (D) the nuclear membrane re-forms and the chromosomes triple in size

Question 10

• (A) interphase (Correct answer)
• (B) telophase
• (C) metaphase
• (D) prophase