Understanding Mitosis

The video tutorial explains the process of mitosis, highlighting its distinction from cytokinesis. It covers the stages of interphase, where the cell grows and replicates its chromosomes, and the phases of mitosis: prophase, metaphase, anaphase, and telophase. The tutorial details the role of centrosomes, microtubules, and kinetochores in chromosome alignment and separation. It concludes with cytokinesis, where the cytoplasm divides, resulting in two identical cells.

What is the primary focus of mitosis?

• Formation of new organelles

• Division of the cytoplasm

• Splitting of the nucleus

• Replication of the entire cell

During which phase of interphase does chromosome replication occur?

• M phase

• G2 phase

• S phase

• G1 phase

What structure is responsible for organizing microtubules during prophase?

• Centromere

• Centrosome

• Chromatid

• Nuclear envelope

What happens to the nuclear envelope during prophase?

• It disassembles

• It thickens

• It remains unchanged

• It duplicates

What is the main event during metaphase?

• Chromosomes align at the cell's center

• Chromosomes replicate

• Nuclear envelope reforms

• Cytoplasm divides

During anaphase, what happens to the sister chromatids?

• They align at the center

• They are pulled apart

• They replicate

• They dissolve

What marks the completion of mitosis?

• Alignment of chromosomes

• Formation of two nuclei

• Separation of sister chromatids

• Formation of new organelles

What process usually occurs simultaneously with telophase?

• Cytokinesis

• Chromosome replication

• Microtubule formation

• Nuclear envelope disassembly

What is the role of the cleavage furrow during cytokinesis?

• To form new organelles

• To replicate DNA

• To divide the cytoplasm

• To align chromosomes

After mitosis and cytokinesis, what phase do the new cells enter?

• G1 phase

• M phase

• S phase

• G2 phase