In this Grade 7 Life Science lesson from Chapter 3, students learn about the cell cycle and its two main phases: interphase, during which the cell grows and duplicates its DNA, and the cell division phase, which includes mitosis and cytokinesis. Students explore how mitosis divides the nucleus and cytokinesis splits the cytoplasm, resulting in two genetically identical daughter cells. The lesson builds foundational understanding of how cell division enables multicellular organisms to grow, develop, and repair themselves.
Section 1
Cells Follow a Cycle of Growth and Division
The cell cycle includes interphase, where cells grow and duplicate DNA, followed by mitosis where the nucleus divides, and cytokinesis where the cytoplasm splits, creating two identical daughter cells.
Section 2
Mitosis Distributes DNA Through Four Phases
During mitosis, chromosomes condense in prophase, line up in metaphase, separate in anaphase, and form new nuclei in telophase. This process ensures each daughter cell receives identical genetic material.
Section 3
Daughter Cells Inherit Identical Genetic Information
Cell division produces two genetically identical daughter cells containing complete copies of the parent cell's DNA. This genetic similarity allows new cells to function properly in growth and repair.
Section 4
Plant and Animal Cells Divide Cytoplasm Differently
During cytokinesis, animal cells pinch inward with a fiber ring while plant cells form a cell plate that develops into a membrane and cell wall, separating the daughter cells.
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Section 1
Cells Follow a Cycle of Growth and Division
The cell cycle includes interphase, where cells grow and duplicate DNA, followed by mitosis where the nucleus divides, and cytokinesis where the cytoplasm splits, creating two identical daughter cells.
Section 2
Mitosis Distributes DNA Through Four Phases
During mitosis, chromosomes condense in prophase, line up in metaphase, separate in anaphase, and form new nuclei in telophase. This process ensures each daughter cell receives identical genetic material.
Section 3
Daughter Cells Inherit Identical Genetic Information
Cell division produces two genetically identical daughter cells containing complete copies of the parent cell's DNA. This genetic similarity allows new cells to function properly in growth and repair.
Section 4
Plant and Animal Cells Divide Cytoplasm Differently
During cytokinesis, animal cells pinch inward with a fiber ring while plant cells form a cell plate that develops into a membrane and cell wall, separating the daughter cells.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter