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Nat 5 Biology Unit 2.1: Multicellular
Organisms - Producing New Cells Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What process is responsible for the production of new cells in multicellular organisms?✔✔Mitosis
Describe the purpose of mitosis in multicellular organisms.✔✔Mitosis is responsible for growth, repair, and asexual reproduction by producing two genetically identical cells.
Explain why the process of mitosis is important for tissue repair.✔✔Mitosis allows damaged cells to be replaced with new cells, ensuring the tissue is restored to its normal function.
What is the role of stem cells in multicellular organisms?✔✔Stem cells can divide to produce more cells and can differentiate into various types of specialized cells.
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Describe what happens during the first stage of mitosis, called interphase.✔✔During interphase, the cell grows, performs its normal functions, and prepares for division by replicating its DNA.
What happens to the chromosomes during mitosis?✔✔The chromosomes duplicate and line up to ensure that each new cell receives an exact copy of the genetic material.
Explain the difference between a stem cell and a differentiated cell.✔✔Stem cells are undifferentiated and can become different types of cells, while differentiated cells are specialized to perform specific functions.
Describe what occurs during prophase in mitosis.✔✔During prophase, the chromosomes condense, the nuclear membrane begins to break down, and spindle fibers form.
What is the significance of the centromere during cell division?✔✔The centromere holds the sister chromatids together and ensures they are pulled apart correctly during mitosis.
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