Chapter 1 Cells the Basic Units of Life 1-3 Organization of Living Things.
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Transcript of Chapter 1 Cells the Basic Units of Life 1-3 Organization of Living Things.
![Page 1: Chapter 1 Cells the Basic Units of Life 1-3 Organization of Living Things.](https://reader036.fdocuments.in/reader036/viewer/2022070404/56649f385503460f94c54c40/html5/thumbnails/1.jpg)
Chapter 1Cells the Basic Units of Life
1-3
Organization of Living Things
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Essential Questions/Learning Goals:
What are three advantages of being multicellular?
Describe the four levels of organization. Explain the relationship between
structure and function
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Science Terms
Tissue Organ Organ system Organism Structure Function
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How do multicellular organisms grow larger?
Multicellular organisms grow larger by adding more small cells rather than making their cells larger.
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What are the benefits of being multicellular
Larger Size:• Larger organisms are less likely to be preyed
upon.
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Multicellular Benefits Continued
Longer Life:• The lifespan of a multicellular organism is not
limited to the lifespan of any single cell in its body.
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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.
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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.
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Animals have four basic types of tissue
Muscle tissue Nerve tissue Connective tissue Protective tissue
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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.
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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.
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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.
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Organisms:
Anything that can perform all of life’s processes by itself.
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Unicellular Organisms
Single celled organisms.• Although these organisms have only one cell, they can
form colonies that can be very large
Single celled organisms.
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Multicellular Organisms
Organisms with two or more cells.• Cells are specialized to perform specific
functions.
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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.