Cell Division
Grade 7 · Science · Cells and Body Systems · Nova Scotia, Canada
Lesson Summary
Understand how cells reproduce by making copies of themselves through mitosis.
Explanation
Cell division is how organisms grow and repair damaged tissue. In mitosis, a cell copies its DNA and splits into two identical daughter cells, each with the same number of chromosomes as the original. The process has several phases: prophase, metaphase, anaphase, and telophase. Before mitosis begins, the cell copies all its DNA during a stage called interphase. This orderly process ensures that every new cell gets a complete set of genetic instructions.
Practice Questions
Q1: What must happen before a cell can divide?
Answer: The cell must copy (replicate) all of its DNA during interphase so that each new cell receives a complete set of genetic information.
Q2: How many daughter cells result from one round of mitosis, and are they identical to the original?
Answer: Two daughter cells are produced, and they are genetically identical to the original cell.
Q3: Why is cell division important for a growing organism?
Answer: Cell division allows the organism to grow larger, replace worn-out cells, and repair injuries by producing new cells.
People Also Ask
What is Cell Division in Grade 7 Science?+
Cell Division is a lesson in the Cells and Body Systems chapter of Grade 7 Science. It is part of the Nova Scotia, Canada school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Cell Division?+
Cell Division is taught in Grade 7 as part of the Science curriculum in Nova Scotia, Canada.
How can I help my child with Cells and Body Systems in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Cells and Body Systems topics.