Unicellular and Multicellular Organisms Test

Which best describes a single celled organism?

• an organism with one cell that uses other cells to survive

• an organism with many cells that work together to survive

• an organism with many cells that battle each other to survive

• an organism with one cell that performs all of its life processes

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What is the main purpose of a single-celled organism?

• to survive

• to reproduce

• to produce food for other organisms

• to work with other single-celled organisms

Which is a characteristic of bacteria?

• large in size

• able to survive as a single cell

• found only in one environmnet

• made up of many different cells working together

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How does an ant benefit from being a multicellular organism?

• Ants have one specialized cell that performs a variety of tasks necessary for life.

• Ants perform a variety of tasks to be able to survive so they need many specialized cells.

• Ants hae one type of cell and this cell performs the same task to help them survive.

• Ants are small organisms but depend of only two different types of cells to help them survive.

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Which best describes the main job of most cells in multicellular organisms?

• Cells work to keep themselves alive.

• Cells work to keep the organism alive.

• Cells work to release needed materials.

• Cells work to store unneeded materials.

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How are multicellular and unicellular organisms different?

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

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

• Unicellular ogransims have one cell and are smaller than multicellular organsisms.

• Multicellular ogransims have one cell and are larger than unicellular organsisms.

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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 unicellular.

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In what way are both humans and bacteria the same?

• Both are living things.

• Both are non-living things.

• Both are multicellular organisms.

• Both are unicellular organisms.

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

• The organism is unicellular.

• The organism is microscopic.

• The organism is multicellular.

• The organism does not have any cells.

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How is it possible for single-celled organisms to survive>

• They are small and can easily avoid predators.

• They have all of their needs met within one cell.

• They have adapted to live only in specific environments.

• They depend on other cells to obtain food, water, and other resources.

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