Page 7 - 新思维科学学生用书7 样章
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1                       Cells









                       1.1  Plant cells





                    In this topic you will:

                    •    begin to learn about cells
                    •    find out about the parts of a plant cell, and what they do

                    •    make a model of a plant cell
                    •    use a microscope to look at plant cells.




                    Getting started                                                           Key words

                    Plants and animals are living organisms. They are made of units           cell
                    called cells.                                                             cell membrane

                    With a partner, think about answers to these questions:                   cell wall
                    •     How big do you think a cell is?
                    •     How can we see cells?                                               cellulose
                    •     Can you describe what a cell looks like?                            chlorophyll

                    Be ready to share your ideas with the class.                              chloroplast
                                                                                              cytoplasm

                                                                                              limitations
                                                                                              magnify

                                                                                              mitochondria

                                                                                              nucleus
                                                                                              sap vacuole






















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