Cell Structure and Function

What is the correct statement of the modern cell theory?

• All organisms are made of tissues; cells arise from non-living matter.
• Cells can spontaneously generate; they are not related to other cells.
• Cells are the structural unit of life but not functional units.
• All living organisms are composed of cells and products of cells; all cells arise from pre-existing cells.

Which scientist first explained how new cells were formed?

• Schleiden
• Leeuwenhoek
• Rudolf Virchow
• Hooke

Who proposed the hypothesis that bodies of animals and plants are composed of cells and products of cells?

• Schleiden
• Virchow
• Hooke
• Schwann

Which of the following best describes the function of the cytoskeleton?

• Stores DNA
• Produces energy
• Photosynthesis
• Maintains cell shape and aids in movement

Which of the following is a function of the nucleolus?

• Stores DNA
• Produces energy
• Photosynthesis
• Produces ribosomes