Cells quiz

Tell three statements from the cell theory.

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Who was the first person to observe cells under a microscope?

• Anton von Leeuwenhoek

• Robert Hooke

• Rudolph Virchow

• Matthias Schleiden

Who determined all plants were made of cells?

• Anton von Leeuwenhoek

• Robert Hooke

• Rudolph Virchow

• Matthias Schleiden

Who determined all animals were made of cells?

• Theodor Schwann

• Robert Hooke

• Rudolph Virchow

• Matthias Schleiden

What are the two parts of the cell theory Schwann contributed to?

• All living organisms are made of cells

• Cells can only be produced by another cell

• The cell is the basic unit of all living organisms

• Cells can be produced by other ways, not only by another cell

What limits the size of a cell?

• Volume

• Surface area

• Surface area-to-volume ratio

• None of these

Why are most cells small?

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The organism above is:

• Multicellular

• Unicellular

• an organism with no cells

• unknown by scientists

What is the surface area-to-volume ratio of a cube whose sides are 9 cm long?

• Approx. 2

• Approx. 0.62

• Approx. 0.67

• Approx. 1.3