5.L.1.1

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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An organism has several major body systems that work together to allow the organisms to survive. Which best describes this organism?

• It is a single-celled organism

• It is a multi-celled organism

• It is a simple organism

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Which characteristic best describes both amoebas and bacteria?

• abiotic

• multi-celled

• single-celled

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Fungi and bacteria are both single-celled organisms. What do they most likely have in common?

• Both fungi and bacteria are large organisms.

• Both fungi and bacteria can carry out all life functions in their one cell.

• Both fungi and bacteria need sunlight and nutrients from the soil to be able to grow.

• Both fungi and bacteria are highly specialized to do only one job so they must work with other cells to obtain food.

When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are MOST likely

• atoms

• dust

• cells

• bubbles

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Which best explains why both cats and humans are multicellular organisms?

• They get energy from many food sources.

• They get energy from a single food source.

• They need only one cell to meet their basic needs.

• They need many cells working together to meet their basic needs.

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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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Which best describes a difference between single-celled organisms and multicellular organisms?

• Single-celled organisms are simple, while multicellular organisms are complex.

• Single-celled organisms have many functions, while multicellular organisms have one function.

• Single-celled organisms can live without water, while multicellular organisms cannot live without water.

• Single-celled organisms can only be found in one specific environment, while multicellular organisms can be found anywhere on Earth.

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A scientist is trying to decide whether an organism is unicellular or multicellular. Which information would help the scientist most to make her decision?

• size of the cells of the organism

• what the organism eats

• how many types of cells are in the organism

• how fast the organism grows

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Which is an activity that a single-celled organism cannot perform?

• eating

• walking

• reproducing

• removing waste