cell theory

Which of the following scientists contributed to the cell theory?

• Rudolf Virchow, Robert Hooke, Anton van Leuwenhoek
• Matthais Schleiden, Theodor Schwann, Rudolf Virchow
• Robert Hooke, Theodor Schwann, Anton von Leuwenhoek
• Theodor Schwann, Matthais Schleiden, Robert HookeOption 4 (optional)

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Which of the following scientists concluded that all animals are made of cells?

• Rudolf Virchow
• Matthais Schleiden
• Robert Hooke
• Theodor Schwann

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Which of the following scientists was the first to observe bacteria?

• Anton van Leuwenhoek
• Matthais Schleiden
• Robert Hooke
• Theodor Schwann

Which of the following statements is not part of the cell theory?

• Cells are the basic unit of structure and function in all living things.
• All cells are produced from other cells.
• Only animal cells are composed of cells.
• All living things are composed of cells.

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The invention of the microscope made it possible for people to discover and learn about

• Plants
• Skin 
• Animals 
• Cells

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What is one way in which all living things on Earth are alike?

• All living things have hair.
• All living things are made of cells and come from other cells.
• The cells of all living things have chloroplast.
• All living things can move. 

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Which statement reflects one of the major components of the cell theory?

• All living things are multi-cellular.
• Organs are the basic unit of structure and function for all living things.
• All cells come from previously existing cells.
• Every organism has a reproductive system to ensure survival of the species.

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What structures distinguish a plant cell from an animal cell?

• Plant cells have cell walls and ribosomes.
• Plant cells have cell walls and chloroplasts.
• Plant cells have chloroplasts and ribosomes.
• Plant cells have chloroplasts and mitochondria.

When cells are damaged, new cells are created by cell division. How does the cell theory support this fact?

• It states that all cells have a nucleus which divides.
• It states that all living things are made up of one or more cells.
• It states that cells come from previously existing cells.
•  It states that the basic units of structure and function are cells.

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Which organism is made up of cells that have both a cell membrane and a cell wall?

• desert mouse
• human 
• maple tree
• zebra

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