Cell Division Concepts in IB Biology

The video tutorial covers the process of cell division, focusing on mitosis in eukaryotic cells. It explains the phases of mitosis, including interphase, prophase, metaphase, anaphase, and telophase, and details the role of DNA replication and chromosome formation. The tutorial also discusses cytokinesis differences in plant and animal cells and highlights the importance of cell cycle regulation. It concludes with an exploration of how disruptions in this regulation can lead to cancer, emphasizing the roles of mutagens and oncogenes.

What is the primary process by which a single cell becomes a multicellular organism?

• Photosynthesis

• Cell Division

• Respiration

• Protein Synthesis

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NGSS.HS-LS1-4

Which phase of mitosis involves the chromosomes lining up in the center of the cell?

• Telophase

• Prophase

• Metaphase

• Anaphase

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NGSS.HS-LS1-4

During which phase does the nuclear membrane break down?

• Prophase

• Metaphase

• Anaphase

• Telophase

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NGSS.HS-LS1-4

What is the main event that occurs during the S phase of interphase?

• Cell growth

• Cell division

• DNA replication

• Protein synthesis

What is the purpose of the G1 phase in interphase?

• DNA replication

• Cell division

• RNA transcription

• Cell growth and preparation for DNA replication

How does cytokinesis differ between plant and animal cells?

• Animal cells form a cell plate, plant cells form a contractile ring

• Plant cells form a cell plate, animal cells form a contractile ring

• Both form a cell plate

• Both form a contractile ring

What structure forms in plant cells during cytokinesis?

• Centromere

• Spindle fibers

• Cell plate

• Contractile ring

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NGSS.HS-LS1-4

What proteins regulate the cell cycle?

• Histones

• Ribosomes

• Enzymes

• Cyclins

What happens if the cell cycle is not properly regulated?

• Cells divide uncontrollably

• Cells stop dividing

• Cells die

• Cells become dormant

Tags

NGSS.HS-LS1-4

What is the term for the spread of cancer cells to new areas of the body?

• Angiogenesis

• Apoptosis

• Differentiation

• Metastasis