Cell Theory and Microscopy Concepts

What are the three main principles of the cell theory?

• All organisms are composed of cells, cells are the basic unit of life, and cells come from non-living matter.

• All organisms are composed of cells, cells are the basic unit of life, and cells come from pre-existing cells.

• All organisms are composed of cells, cells are the largest unit of life, and cells come from pre-existing cells.

• All organisms are composed of cells, cells are the basic unit of life, and cells can spontaneously generate.

Who is often credited with inventing the first compound microscope?

• Robert Hooke

• Antonie van Leeuwenhoek

• Zacharias Janssen

• Isaac Newton

What did Antonie van Leeuwenhoek discover by looking at dental scrapings under his self-made microscope?

• Plant cells

• Animalcules (bacteria)

• Cork cells

• Nerve cells

Who was the scientist who first used the term "cell" after observing cork under a microscope?

• Antonie van Leeuwenhoek

• Matthias Schleiden

• Theodor Schwann

• Robert Hooke

Which two scientists concluded that all plants and all animals, respectively, are made of cells?

• Robert Hooke and Antonie van Leeuwenhoek

• Rudolf Virchow and Robert Remak

• Matthias Schleiden and Theodor Schwann

• Isaac Newton and Robert Hooke