Don't go on until you can say it.
What does it mean? It's a cell that has a nucleus! Remember that the most important thing about a nucleus is that it has all the chromosomes inside it. It's the chromosomes that tell the cell what kind of cell it is. The instructions a cell uses to make another cell like itself are called chromosomes {say: KRO-mo-somes}. Chromosomes look like twisty little strings of complicated molecules. Organisms in four of the five kingdoms store their chromosomes inside the nucleus. The nucleus has a membrane around it, keeping all the nuclear stuff inside in one organized place. We call an organism with a nucleus in its cells, a eukaryote. In your workbook on p. 4, answer the question: What is a eukaryote? |
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Draw some chromosomes inside your nucleus on p. 3. (Our cell is going to be eukaryotic.) |
Eukaryotic cell |
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Prokaryotes |
Nucleus