Phases of Mitosis

Mr. Anderson explains the phases of mitosis, a key process in cell division, ensuring the creation of two identical daughter cells from a parent cell. The video covers the cell cycle, focusing on interphase and mitosis, and uses onion cells and sea urchins to illustrate the process. Mitosis is presented as a continuous movie, with detailed explanations of each phase: prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. The video concludes with mnemonic tips to help remember the phases.

What is the primary purpose of mitosis in cell division?

• To produce two identical daughter cells

• To increase the size of the cell

• To create genetically diverse cells

• To eliminate old cells

During which phase of the cell cycle does DNA replication occur?

• G1 phase

• S phase

• G2 phase

• M phase

What is the G0 phase in the cell cycle?

• A phase where cells undergo DNA repair

• A phase where cells prepare for division

• A phase where cells permanently stop dividing

• A phase where cells rapidly divide

What happens to the nuclear envelope during mitosis?

• It remains intact throughout

• It fragments and then reforms

• It dissolves permanently

• It doubles in size

What is the role of the centrosomes during mitosis?

• To elongate the cell

• To dissolve the nuclear envelope

• To form the mitotic spindle

• To replicate DNA

What are sister chromatids?

• Proteins that bind DNA

• Identical copies of a chromosome

• Different chromosomes in a cell

• Segments of RNA

What is the function of the kinetochore during mitosis?

• To form the cell membrane

• To dissolve the nuclear envelope

• To attach chromosomes to microtubules

• To replicate DNA

During which phase of mitosis do chromosomes align at the cell's equator?

• Prophase

• Anaphase

• Metaphase

• Telophase

What occurs during anaphase of mitosis?

• Nuclear envelope reforms

• Chromatids separate and move to opposite poles

• Cell membrane pinches in

• Chromosomes condense

What is the final step of mitosis that results in two separate cells?

• Metaphase

• Cytokinesis

• Prophase

• Anaphase