Multicellular Organisms

Why does a human require specialized cells to live?

• Specialized cells allow humans to adapt to changes in their environment.

• Human bodies have several body systems which require cells with different functions/jobs.

• Specialized cells allow for all life processes to occur in one cell.

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How are multicellular and unicellular organisms different?

• Multicellular organisms have more than one cell and are smaller than unicellular organisms.

• Unicellular organisms have more than one cell and are larger than multicellular organisms.

• Unicellular organisms have one cell and are smaller than multicellular organisms.

• Multicellular organisms have one cell and are larger than unicellular organisms.

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A human is a...?

• Single-celled organism

• Unicellular Organism

• Specialized cell

• Multicellular organism

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Why do animals need multiple specialized cells to live?

• One cell is too small to survive.

• They all join together to form one giant cell.

• They all work together to perform all the functions to survive.

• Each cell is a different color.

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Transport systems are necessary in...

• Unicellular organisms

• Multicellular organisms

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An example of s specialized cell in a multicellular organism is...

• A skin cell

• Bacteria

• Plankton

• A paramecium

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Sue and Allie read about different kinds of organisms. They read about an organism with a respiratory system, digestive system, skeletal system, and muscular system. Which can Sue and Allie most likely conclude about this organism?

• The organism is unicellular.

• This organism is microscopic.

• The organism is multicellular.

• The organism does not have any cells.

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Which best explains why humans are multicellular organisms?

• Human cells are too small to function alone.

• Human cells join together to form one large cell.

• Humans need many cells to carry out life processes.

• Humans have many systems that perform the same function.

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Which statement would most likely be found in an article about multi-celled organisms like plants?

• Plants have a simple structure.

• Plants contain only one cell that performs all functions.

• Plants do not need to eat, remove waste, or reproduce.

• Plants contain many specialized cells that perform different functions.

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Which best describes a difference between a unicellular organism and a multicellular organism?

• A unicellular organism is a plant and a multicellular organism is a human.

• A unicellular organism has one purpose- to survive.  A multicellular organism has many cells working together to keep the organism alive.

• A multicellular organism is simple and a unicellular organism is complex.

• A unicellular organism can only be found in certain biomes but a multicellular organism can be found anywhere on Earth.

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