Cell Theory

Robert Hooke, Anton van Leeuwenhoek, Theodor Schwann, Rudolf Virchow, and Matthias Schliden were all responsible for what theory?

• The Theory of Living Organisms

• The Theory of Relativity

• The Cell Theory

• The Theory of Continental Drift

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______________ are the basic unit of life.

• DNA
• RNA
• Cells
• Takis

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Which of the following is NOT one of the basic points of Cell Theory?

• All living things are made of cells.
• The cell is the smallest living thing that can perform all the functions of life.
• Cells are too small to see without a microscope.  
• All cells must come from pre-existing cells.

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True or False: There are more than two scientist who contributed to the cell theory.

• True

• False

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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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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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.

Which invention from the 17th century allowed for the development of modern cell theory?

• x-rays
• computers
• the light microscope
• the scanning electron microscope

A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?

• Plants have cells but animals do not.
• They are both made of one or more cells. 
• They both come from the same kind of cell.
• They both come from a non-living organism.

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Unlike eukaryotes, prokaryotes do not have:

• DNA
• cytoplasm
• cell walls
• a membrane bound nucleus

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