D2.1 Cell Division 2

What is the role of motor proteins during cell division, specifically related to chromosomes?

• A. Replicating the chromosomes

• B. Transporting chromosomes along microtubules

• C. Synthesizing spindle fibers

• D. Degrading the nuclear membrane

When does the nuclear membrane break down during mitosis?

• A. At the end of prophase

• B. During metaphase

• C. In anaphase

• D. At the onset of telophase

Following which phase of mitosis does the nuclear membrane reform around the daughter cell nuclear material?

• A. Prophase

• B. Metaphase

• C. Anaphase

• D. Telophase

At which stage of mitosis do the chromosomes become arranged at the equator of the spindle?

• A. Prophase

• B. Metaphase

• C. Anaphase

• D. Telophase

During which phase of mitosis do the chromosomes become visible as long thin threads that increasingly shorten and thicken by supercoiling?

• A. Prophase

• B. Metaphase

• C. Anaphase

• D. Telophase

What error in terminology is advised against, regarding sister chromatids during mitosis?

• A. Referring to them as chromosomes before cell division

• B. Calling them 'sister chromatids' after they have separated

• C. Describing them as 'chromatids' throughout mitosis

• D. Naming them centromeres after anaphase

During which stage of the cell cycle are chromatids formed, as referenced in the discussion on cell division?

• A. G1 phase

• B. S phase

• C. G2 phase

• D. Interphase

What is the main advantage of chromosomes being 'supercoiled' during metaphase of mitosis?

• A. To increase genetic variation

• B. To facilitate DNA replication

• C. To enhance microtubule attachment

• D. To make the chromosomes more compact for separation

What structure is formed in the cytoplasm that radiates out from the centrioles during metaphase?

• A. Nuclear membrane

• B. Microtubule spindle

• C. Chromatid cluster

• D. Centromere link

In which stage of mitosis do the centromeres divide and the sister chromatids move apart to opposite poles of the cell?

• A. Prophase

• B. Metaphase

• C. Anaphase

• D. Telophase