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Cells and Life

1. Cells and Life. What do you think?. Nonliving things have cells. Cells are made mostly of water. 1. Cells and Life. Do you agree or disagree?. 1. Cells and Life. How did scientists’ understanding of cells develop? What basic substances make up a cell?. cell theory macromolecule

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Cells and Life

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  1. 1 Cells and Life • What do you think?

  2. Nonliving things have cells. Cells are made mostly of water. 1 Cells and Life • Do you agree or disagree?

  3. 1 Cells and Life How did scientists’ understanding of cells develop? What basic substances make up a cell?

  4. cell theory • macromolecule • nucleic acid • protein • lipid • carbohydrate • 1 • Cells and Life

  5. 1 Cells and Life Two of a Kind? Look at the photo at the beginning of the lesson. At first glance, the plant and animal in the photo might seem like they have nothing in common. The plant is rooted in the ground, and the iguana can move quickly. Are they more alike than they appear? How can you find out?

  6. 1 Cells and Life

  7. Do you agree or disagree? Nonliving things have cells. 1 Cells and Life Disagree. Cells are found only in living things.

  8. Do you agree or disagree? Cells are made mostly of water. 1 Cells and Life Agree. Water makes up more than 75 percent of a cell’s volume.

  9. How did scientists’ understanding of cells develop? 1 Cells and Life The invention of the microscope led to discoveries about cells. In time, scientists used these discoveries to develop the cell theory, which explains how cells and living things are related.

  10. What basic substances make up a cell? 1 Cells and Life Cells are composed mainly of water, proteins, nucleic acids, lipids, and carbohydrates.

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