Mastering Mitosis and Cytokinesis in the Cell Cycle

The video tutorial explores the M phase of the cell cycle, focusing on mitosis and cytokinesis. It reviews the cell cycle phases, highlighting that the M phase involves cell division through mitosis (nuclear division) and cytokinesis (cytoplasm division). Mitosis is divided into prophase, metaphase, anaphase, and telophase. Prophase involves chromatin condensing into chromosomes, spindle fibers forming, and the nuclear membrane disappearing. Metaphase aligns chromosomes at the cell equator. Anaphase separates sister chromatids, and telophase reforms the nuclear membrane. Cytokinesis completes cell division, resulting in two identical daughter cells.

What is the primary function of the M phase in the cell cycle?

• Protein synthesis

• Cell growth

• DNA replication

• Cell division

During prophase, what happens to the chromatin?

• It remains unchanged

• It breaks down into nucleotides

• It condenses into chromosomes

• It disperses into the cytoplasm

What structure attaches sister chromatids together?

• Centrosome

• Centromere

• Centriole

• Chromatid

In metaphase, where are the chromosomes aligned?

• At the cell poles

• Along the cell equator

• In the cytoplasm

• Near the centrioles

What occurs during anaphase?

• Nuclear membrane reforms

• Spindle fibers disappear

• Chromosomes condense

• Sister chromatids separate

What is the role of spindle fibers during mitosis?

• To condense chromatin

• To separate sister chromatids

• To dissolve the nucleolus

• To form the nuclear membrane

What marks the end of mitosis?

• Chromosomes condense

• Nuclear membrane reforms

• Spindle fibers form

• Cytoplasm divides

How does cytokinesis differ in plant and animal cells?

• Animal cells form a cell plate

• Plant cells form a cleavage furrow

• Plant cells pinch inwards

• Animal cells pinch inwards

Which phase of mitosis involves the reformation of the nuclear membrane?

• Telophase

• Anaphase

• Metaphase

• Prophase

What is the result of the M phase in terms of daughter cells?

• Two identical daughter cells

• Four identical daughter cells

• Two different daughter cells

• Four different daughter cells