NC Science 5.L.1

A class is modeling the differences between a unicellular organism and a multicellular organism. Which example is a model of a unicellular organism?

• a student passing out water to a group

• a student getting cereal from the cabinet

• two students collecting trash from a group

• four students working together to move a desk

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Which BEST describes ALL unicellular organisms?

• Every cell is round.

• Every cell can make food.

• Every cell can move on its own.

• Every cell performs all life functions.

What is the main purpose of single-celled organisms?

• to survive

• to reproduce

• to produce food for other organisms

• to work with other single-celled organisms

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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Why does a human require specialized cells to live?

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

• Human bodies have systems that require cells with different functions.

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

• Human bodies are simple and require few cells.

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An organism can only be seen through a microscope. Which is most likely true of that organism?

• It is a plant.

• It is an animal.

• It is multicellular.

• It is single-celled.

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NGSS.MS-LS1-1

A unicellular organism is BEST described as being

• a complex organism.

• a microorganism.

• an organism with specialized cells.

• an organism with different types of tissues.

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How are single-celled organisms and multi-celled organisms similar?

• Both need food for energy and growth.

• Both have a skeletal system for support.

• Both require the interaction of many cells to survive.

• Both are able to carry out all life functions in only one cell.

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Which best describes a snake?

• A snake is made up of one cell that carries out one life process at a time.

• A snake is made up of many cells that carry out one life process at a time.

• A snake is made up of one cell that carries out many different life processes when needed.

• A snake is made up of many cells that carry out many different life processes when needed.

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NGSS.MS-LS1-1

In which way are multicellular organisms similar?

• All of their cells transport food.

• All of their cells have the same job.

• All have cells that work together to keep the organism alive.

• All have one cell that meets all the basic needs of the organism.

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