Cell Theory and Cellular Structures

Who is credited with the formulation of the cell theory?

• Antonie van Leeuwenhoek

• Robert Hooke

• Matthias Schleiden and Theodor Schwann

• Louis Pasteur

What was Robert Hooke's contribution to cell theory?

• Discovering bacteria

• Inventing the microscope

• Coining the term "cell" after observing cork

• Proposing that all plants are made of cells

Which event was crucial for the development of cell theory?

• The invention of the printing press

• The discovery of microorganisms

• The improvement of the microscope

• The publication of Darwin's "On the Origin of Species"

What is a key difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus, while eukaryotic cells do not.

• Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not.

• Prokaryotic cells are typically larger than eukaryotic cells.

• Eukaryotic cells are always multicellular, while prokaryotic cells are not.

Which scientist is known for improving the microscope and observing the first living microorganisms?

• Galileo Galilei

• Carl Linnaeus

• Antonie van Leeuwenhoek

• Gregor Mendel

What does the cell theory state?

• All living organisms are composed of one or more cells.

• Cells are the basic unit of structure and organization in all living organisms.

• All cells arise from pre-existing, living cells.

• All of the above.

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Which of the following is NOT a characteristic of prokaryotic cells?

• They lack a true nucleus.

• They have a rigid cell wall.

• They contain mitochondria.

• They reproduce by binary fission.

In which year did Theodor Schwann and Matthias Schleiden propose their cell theory?

• 1665

• 1839

• 1859

• 1879

Which structure is present in a eukaryotic cell but not in a prokaryotic cell?

• Ribosomes

• Plasma membrane

• Nucleus

• Cytoplasm

What is the function of the cell wall in prokaryotic cells?

• To control the entry and exit of substances

• To protect the cell and maintain its shape

• To perform photosynthesis

• To store genetic material