---
title: "Differentiation and Stem Cells"
description: "An unspecialised cell switches on part of its genes and becomes a cell with a job. Compares embryonic, adult and plant meristem stem cells, with the medical uses and the objections that come with them"
canonical: https://lightmysky.com/learn/science/differentiation-and-stem-cells-mt_UmLJgmcCjO
source: https://lightmysky.com/learn/science/differentiation-and-stem-cells-mt_UmLJgmcCjO.md
retrieved: 2026-09-12
---

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# Differentiation and Stem Cells

An unspecialised cell switches on part of its genes and becomes a cell with a job. Compares embryonic, adult and plant meristem stem cells, with the medical uses and the objections that come with them.

Subject: Science · Area: Organisms & Life Processes · Ages 14 to 16
Page: https://lightmysky.com/learn/science/differentiation-and-stem-cells-mt_UmLJgmcCjO

## Ready when they can

- Explains what differentiation changes inside a cell, given that every cell holds the same genes.
- Compares what embryonic and adult stem cells can turn into.
- Gives one medical use of stem cells and one objection people raise to it.

## Lesson: Same genes, different jobs

You began as one cell holding every gene needed to build you. Differentiation is how its daughters take on jobs: each keeps the full gene set but switches on only the genes its job needs. A muscle cell reads the contracting chapters, a nerve cell reads the signalling ones.

**Example.** Transcription factors are the switches. These proteins bind near DNA and turn genes on or off in each cell. That is why two cells with the same book can read different chapters and end up looking nothing alike.

Cells without a job yet are stem cells. Embryonic stem cells are pluripotent and can turn into almost any cell type. Adult stem cells, hiding in places like bone marrow, are multipotent and replace only their neighbours. Plants keep growing all their lives using meristem cells at root and shoot tips.

**Tip.** Stem cells can treat disease, for example by replacing damaged blood cells, but their use raises objections, especially around embryos. Give one medical use and one objection, and say which cell type each point is about.

**Recap.** Every cell holds the same genes, switching turns some on, and stem cells keep their options open.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [The Cell Cycle and Mitosis](https://lightmysky.com/learn/science/the-cell-cycle-and-mitosis-mt_gllZOZEzW7)
- [Cancer & Stem Cells](https://lightmysky.com/learn/science/cancer-and-stem-cells-mt_roinupb_7L)

## Opens up

- [Cloning: Cuttings, Tissue Culture and Adult Cell Cloning](https://lightmysky.com/learn/science/cloning-cuttings-tissue-culture-and-adult-cell-cloning-mt_3NaPCGrZTg)
- [Enhancers, Accessibility and Combinatorial Control](https://lightmysky.com/learn/science/enhancers-accessibility-and-combinatorial-control-mt_BTMCj6V6jD)
- [Tissue Types and How a Body Is Organised](https://lightmysky.com/learn/science/tissue-types-and-how-a-body-is-organised-mt_dQ-glI4kdz)
- [Transcription Factors and Epigenetic Control](https://lightmysky.com/learn/science/transcription-factors-and-epigenetic-control-mt_nF4JJ_EDa4)