Biological Organization

What is a cell?

• the basic unit of life

• a group of tissues working together to perform a function

• the largest level of biological organization

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The skin is an example of what level of biological organization?

• cell

• organ

• tissue

• organism

• organ system

• all living things

• organ

• organism

Why are all cells different?

• all cells are the same

• different cells perform different functions

• multicellular organisms can live with one type of cell

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What is a multicellular organism?

• an organism with only one cell

• bacteria

• an organism with more than one type of cell

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Which one is an example of a multicellular organism?

• tree

• bacteria

• protezoa

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Which one is an example of a unicellular organism?

• a tree

• bacteria

• a dog

• a person

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NGSS.MS-LS1-1

What is a unicellular organism?

• an organism that can live with only one cell

• an organism with more than one cell

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What level of biological organization is the largest (includes all other levels)?

• organ

• organ systems

• organism

• cells

What is the largest organ in the body?

• heart

• brain

• stomach

• skin