Practice Test: Cells

In 1665 Robert Hooke observed a thin slice of cork under a microscope and presented a drawing similar to the one shown. Hooke called the structures he observed -

• Chloroplast

• root hairs

• stomata

• cell

In a typical animal cell, which component contains the greatest amount of water

• Cell membrane

• Cytoplasm

• Ribosomes

• Nucleus

Which discovery was essential to the concept that all life forms have cells as basic units?

• water is the chemical solvent involved in many cell processes

• new cells are produced from the division of existing cells

• some substances in organisms exist outside of cells

• cells are dependent on energy and nutrients from external sources

Which set of materials would be best to use to prepare a wet mount slide of onion skin cells?

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Under a microscope, a series of cells are observed that lack membrane-bound internal organelles. Which of these is the most likely cell type?

• plant cell

• animal cell

• eukaryotic cell

• prokaryotic cell

Which of these supports the cell theory as it is stated today?

• new cells are produced by division of existing cells

• all organisms are composed of more than one cell

• cells must contain a nucleus

• not all cells are alive

Which is the name of structure 4

• nucleus

• ribosome

• vacuole

• cell wall

Using this tool, Anton van Leeuwenhoek was the first scientist to -

• use a telescope

• see microscopic organisms

• magnify plants

• observe light waves

Which pair of structures best shows that plant cells have functions different from animal cells?

• cytoplasm and mitochondria

• chloroplasts and cell wall

• nuclei and centrioles

• ribosomes and cell membrane

The main difference between prokaryotic and eukaryotic cells is that -

• prokaryotic cells are always much larger

• prokaryotic cells do not have a plasma membrane

• eukaryotic cells have a smaller cell nucleus

• eukaryotic cells have a more advanced cellular organization