Multicellular Organisms

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Presentation transcript:

Multicellular Organisms

STANDARD: 5.L.1.1 Explain why some organisms are capable of surviving as a single cell while others require many cells that are specialized to survive. I can list examples of multicellular organisms and describe their structures and functions. Clear Learning Goals: List examples of multi cellular organisms and describe their structures and functions.

We have been talking about how cells are the building blocks of all organisms. Yesterday we discussed one celled organisms.  What do you remember about yesterday's lesson?   Recall those ideas now. Today we will be exploring multicellular organisms.

Multicellular Organisms A multicellular organism is made up of more than one cell. Humans, animals, and plants are all examples of multicellular organisms.

Unicellular and Multicellular Organisms

Multicellular Organisms Each kind of cell does a different job. It’s shape and structure helps it carry out this job.

Cells, Tissues, Organs – Organ Systems

Multicellular Organisms Groups of cells form tissue, groups of tissue forms organs, groups of organs form systems.

Multicellular Organisms Tissue Organ System Muscle cell Muscle tissue Muscle Muscular system

Multicellular Organisms

Comparing Unicellular & Multicellular Single celled organisms take in material directly from their surroundings, while multicellular organisms have systems for moving materials throughout their body. A system is a group of parts that work together.

To summarize: Unicellular (single celled) Organisms can perform all of life’s functions within a single cell. Multicellular (many celled) Organisms have many cells that each perform a special task. They need all of these different kinds of cells working together in order to survive.

Brainpop - Cell Specialization

Exit Ticket What is the correct order for how cells group together in multicellular organisms? How are humans different from amoebas?