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Which of the following best describes where a skin cell comes from based on cell theory?

• it depends on the individual organism

• an organ system

• the skin cell must be made in a laboratory

• another skin cell

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Which of the following is an example of something that is made of cells?

• flower

• sock

• ball

• television

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NGSS.MS-LS1-1

Select the statement that accurately summarizes what it means to say that cells are the "basic unit" of life.

• Cells are made of molecules and atoms.

  
  

• Cells can be broken down into smaller living parts.

  
  

• Cells are the smallest part of organisms that are alive.

  
  

• Cells can divide to make new cells in all organisms.

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NGSS.MS-LS1-1

What is the smallest structure that can carry out all the functions that are required for life?

• a single cell

  
  

• a group of molecules

  
  

• a group of cells

  
  

• a single atom

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NGSS.MS-LS1-1

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How many things in this terrarium are made of cells?

• 2

• 4

• 1

• 3

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NGSS.MS-LS1-1

Which statement below is correct according to the cell theory?

• All cells are round.

  
  

• All cells in an organism are identical.

  
  

• All organisms are unicellular.

  
  

• All cells come from pre-existing cells.

What is the primary reason cells undergo cellular respiration?

• to get rid of wastes

• to create energy from the sun

• to supply plants with carbon dioxide

• to convert food to useable energy

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NGSS.MS-LS1-2

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What is an organism

• any living thing

• the smallest living unit of an organism

• cell theory

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NGSS.MS-LS1-1

What is a cell?

• any living thing

• the smallest living unit of an organism (basic unit of life)

• cell theory

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NGSS.MS-LS1-1

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Which characteristic is true about all the groups?

• They are made of one or more cells.

• They produce oxygen.

• They make their own food.

• They contain tissues and organs.

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NGSS.MS-LS1-1