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Chapter 1 Cells the Basic Units of Life

Chapter 1 Cells the Basic Units of Life. 1-3 Organization of Living Things. Essential Questions/Learning Goals:. What are three advantages of being multicellular? Describe the four levels of organization. Explain the relationship between structure and function. Science Terms. Tissue Organ

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Chapter 1 Cells the Basic Units of Life

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  1. Chapter 1Cells the Basic Units of Life 1-3 Organization of Living Things

  2. Essential Questions/Learning Goals: • What are three advantages of being multicellular? • Describe the four levels of organization. • Explain the relationship between structure and function

  3. Science Terms • Tissue • Organ • Organ system • Organism • Structure • Function

  4. How do multicellular organisms grow larger? • Multicellular organisms grow larger by adding more small cells rather than making their cells larger.

  5. What are the benefits of being multicellular • Larger Size: • Larger organisms are less likely to be preyed upon.

  6. Multicellular Benefits Continued • Longer Life: • The lifespan of a multicellular organism is not limited to the lifespan of any single cell in its body.

  7. Multicellular Benefits Continued • Specialization: • Each cell in a multicellular organism has a particular job. • Specialization makes the cell more efficient or better suited to perform their job. • Ex. Cardiac cells are specialized to never tire.

  8. Cells Working Together: • Tissue: • A group of cells that work together to perform a specific task. • The material around and between the cells are part of that tissue.

  9. Animals have four basic types of tissue • Muscle tissue • Nerve tissue • Connective tissue • Protective tissue

  10. Plants have three basic types of tissue. • Transport tissue: moves water and nutrients throughout the plant. • Protective tissue: Covers the plant, retains water. • Ground tissue: Photosynthesis occurs here.

  11. Tissues Working Together: • Organ: • A structure that is formed of two or more tissues that combine to perform a specific task. • Animals: Heart, lungs, kidneys, brain, lungs, skin, liver. • Plants: Leaves, stems, and roots.

  12. Organs Working Together: • Organ System: • A group of organs that work together to perform a specific function for the body. • Animals: digestive, respiratory, circulatory, nervous. • Plants: Stem, root, and leaf.

  13. Organisms: • Anything that can perform all of life’s processes by itself.

  14. Unicellular Organisms • Single celled organisms. • Although these organisms have only one cell, they can form colonies that can be very large • Single celled organisms.

  15. Multicellular Organisms • Organisms with two or more cells. • Cells are specialized to perform specific functions.

  16. Structure and Function: • Structure is… • the arrangement of parts in an organism • Its shape and what its made of. • Function is the… • job that the structure performs. • The structure and function of organs and tissues allows them to perform their function.

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