Multicellular Organisms

To move, the muscular system needs to work with the ___________________ system that sends signals from the brain.

• skeletal

• nervous

• circulatory

• excretory

The heart pumps blood that carries oxygen all over the body. The oxygen comes from the _____________ system.

• nervous

• circulatory

• respiratory

• muscular

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Tissue is made from ________________.

• organisms

• organs

• cells

• bones

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What does multicellular mean?

• one cell

• many cells

• nonliving

• living

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It is possible to trick the brain by altering ________________ to make you think you're eating something sweet.

• your eyes

• your teeth

• your taste buds

• neurons

Organs work together to make ___________________.

• body tissue

• other organs

• cells

• body systems

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Stems and roots would be a part of a ________________ system.

• plant

• human

• insect

• bacteria

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To stay alive, systems need to work ______________________.

• alone

• together

• independently

• randomly

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To digest the food we eat, the digestive system has to work with the _______________ system.

• muscular

• circulatory

• nervous

• all of the above

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The excretory system gets rid of _______________ in your body.

• fat

• energy

• waste

• air