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Understanding Cell Theory: Basics and Exceptions

This lesson focuses on the fundamental principles of cell theory, providing insights on the nature of theories and their differentiation from laws in scientific understanding. Students will engage in readings, answer specific questions about theories, and explore exceptions to the cell theory, including organelles like mitochondria and chloroplasts as well as viruses. The assignment includes identifying the core aspects of cell theory and reflecting on the origins of the first cell, garnering a deeper appreciation of cellular biology.

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Understanding Cell Theory: Basics and Exceptions

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  1. Do Now • Take papers from the side counter • Write down your homework. Cell theory reading and questions • Take out your microscope lab to hand in • On the top of the notes OR on a separate sheet of paper, answer the following: • What is a theory? • How is a theory different from a law? • What are some theories you know of?

  2. Cell Theory

  3. What is the cell theory? • 1. Cells are the basic unit of structure and function of ALL living things • 2. All cells come from other cells and pass information through genetic code. • 3. All cells use the same chemicals to carry out the same reactions.

  4. Exceptions to the Cell Theory • Mitochondria and Chloroplasts • They contain genetic material but are NOT cells

  5. Exceptions to the Cell Theory • The first cell • If all cells come from other cells, where did the first cell come from???

  6. Exceptions to the Cell Theory • Viruses • They contain no genetic material, but they can “replicate” using the cells of the host

  7. Artistic Cell: Harvard How big is a cell?: Cells Alive

  8. Cell Theory 1. The cell is the ___________ _______ of structure and function of all living things 2. All cells __________ ________ other _______ and pass information on through _____________ information 3. All cells are made from the _______ _______________.

  9. Exceptions to Cell Theory • ________________ and ______________ • They contain ____________ material, but are not cells 2. The _________ _________ If all cells come _______ _________ ______, where did the first cell come from??? 3. ____________ They contain no genetic material but can replicate using infected cell

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