CH 3: Cell Structure and Function — Review

The slide title states The Basic Unit of Life alongside images of red blood cells and plant cells. What is identified as the basic unit of life?

• Atom

• Tissue

• Cell

• Organ

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who first used the word cell in late 1665?

• Antonie van Leeuwenhoek

• Robert Hooke

• Theodore Schwann

• Matthias Schleiden

What did Robert Hooke examine when he first used the word cell?

• Thin slices of cork

• Human blood smears

• Bacterial cultures

• Animal muscle fibers

Which instrument did Robert Hooke use to look at thin slices of cork?

• Electron microscope

• Light microscope

• Stereo microscope

• Telescope

Cork seemed to be made of thousands of tiny, empty chambers. Why did Hooke call these chambers cells?

• They resembled tiny rooms in a monastery

• They appeared as moving organisms

• They looked like plant leaves

• They were filled with colorful pigments

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Today we know that cells are not empty chambers. What do they contain?

• Nothing at all

• Only air

• Much living matter

• Only water

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Around 1674, Anton van Leeuwenhoek made better simple microscopes to observe things in nature. What was he the first to do under the microscope?

• Measure cell size

• See and describe microorganisms

• Photograph plant tissues

• Discover cell nuclei

What did Leeuwenhoek discover in a drop of water?

• Protozoa, which he called animalcules or little beasties

• Plant cells with chloroplasts

• Red blood cells exclusively

• Viruses visible to the naked eye

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Match each scientist to the statement associated with the development of cell theory.

• German Zoologist

• Theodore Schwann (1839)

• All plants are composed of cells

• Matthias Schleiden (1838)

• All animals are composed of cells

• Profession of Schleiden

• German Botanist

• Profession of Schwann

Which statement is attributed to Matthias Schleiden, according to the slide On the road to the cell theory?

• All animals are composed of cells

• All plants are composed of cells

• Cells arise from pre-existing cells

• Cells are empty chambers

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