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Which statement best describes a bacterial cell?

• It contains more than one cell.

• It is a complete organism.

• It is part of a larger organism.

• It contains different kinds of cells.

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Which of the following states a difference between single-celled organisms and multi-celled organisms?

• Single-celled organisms are dead while multi-celled organisms are alive.

• Single-celled organisms do not have organs while multi-celled organisms have organs.

• Multi-celled organisms are made up of cells performing the same function while single-celled organisms are not.

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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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NGSS.MS-LS1-1

Which characteristic do single-celled organisms and multicellular organisms have in common?

• Both have cells with specialized functions for each life process.

• Both perform all life processes within one cell.

• Both have a way to get rid of waste materials.

• Both are able to make food from sunlight.

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 single-celled organisms.

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NGSS.MS-LS1-1

Which best explains how a single-celled organism can survive without other cells?

• They do not need any substance from outside of the cell.

• They are able to perform all necessary functions within one cell.

• They do not need to perform more than one function to survive.

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Which best describes a function of both multi-celled and single-celled

organisms?

• to create specialized tissues

• to rely on specialized cells to complete certain tasks

• to obtain energy from nutrients to maintain life and growth

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Which organisms are capable of surviving as a single cell?

• bacteria

• humans

• plants

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Which organism is best classified as a single-celled organism?

• grasshopper

• pine needle

• bacteria

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NGSS.MS-LS1-1

Which body system is made up of the following structures: mouth, esophagus, stomach, and

intestines?

• digestive system

• muscular system

• respiratory system

• cardiovascular system