Multicellular vs Unicellular

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 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.

Which organism is also known as Single cell?

• multicellular organism

• unicellular organism

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NGSS.MS-LS1-1

Sam is studying a sample of lake water using a microscope. He finds an organism moving around in the water, and he thinks it may be a multi celled organism. Which of the following characteristics of the organism make it MOST likely to be a multi celled organism?

• moving body parts

• a beating heart

• what appears to be a body covering

• hair like structures on its surface

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NGSS.MS-LS1-1

Which type of organism needs a Transport System?

• Unicellular Organisms

• Multicellular Organisms

Why do multicellular organisms need transport systems?

• Most have cells that are not able to exchange gases with the outside environment.

• Most have cells that are unable to grow and survive in their environment.

• Most have cells that need food from sources outside their environment.

• Most have cells that require more energy to survive than single-celled organisms.

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Which of the following statement is TRUE about Specialized Cells?

• They have a special function to carry out in a multicellular organism.

• They all carry out the same functions.

• They are only found in unicellular organisms.

• All of the above

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A paramecium is an examples of...

• Unicellular Organism

• Multicellular Organism

• Neither

• Both

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Bacteria is an example of a ________________ organism.

• Unicellular

• Multicellular

• Bicellular

• Tricellular

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NGSS.MS-LS1-1

Multicellular organisms are composed of more than one _______________.

• Allele

• Cell

• Antibiotic

• chemical change

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NGSS.MS-LS1-1

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