The Cell Cycle Remember the grammar! Introductory phrases can tell us about when something happens. These phrases can be good transitions in your writing! Before _______________, (full sentence). During ________________, (full sentence). After _________________, (full sentence). After that, (full sentence). Activity 1. Read about cell division in the section called “Making More Eukaryotic Cells” on p.153 in your textbook. 2. Use the reading to put the sentences below in order by numbering them in the blank to the left. 3. For each sentence, choose the appropriate part of the cell cycle and whether it happens “before,” “during,” or “after” that part. 4. Copy your completed sentences in order onto your notebook. Don’t forget the commas! Order before/during # /after interphase / mitosis / cytokinesis Sentence The cell goes through mitosis. The cell must copy its chromosomes, which happens during interphase. Two daughter cells form. Their DNA is identical. The cell begins cytokinesis. The cell also grows. The chromosomes separate into two identical sets. Flow Map Based on the section you just read, do a flow map of the three stages of the cell cycle. Use complete sentences, and underline the name of each stage. At the end, draw an arrow back to the beginning to show that it starts again! Phases of Mitosis 1. Read Figure 4 on page 154-155 of your textbook. 2. Use what you learn to complete the table below. Name Mitosis Stage Illustration (color) Describe what happens to the chromosomes. (If nothing happens, describe its state) Describe what happens to the nuclear membrane. (If nothing happens, describe its state) Describe any other important changes. (If you don’t see something specific, make a general statement.) 1-Prophase 2- Mitosis 3- 4- Answers – Cell Cycle Sentences 1. 2. 3. 4. 5. 6. Before mitosis, the chromosomes must be duplicated. This happens during interphase. During interphase, the cell also grows. After interphase, the cell goes through mitosis. During mitosis, the chromosomes separate into two identical sets. After the chromosomes separate, the cell begins cytokinesis. During cytokinesis, two daughter cells form. Their DNA is identical.