Biology and Cell Theory Quiz

What is the smallest unit of life that is still considered alive?

• An atom

• A cell

• A molecule

• A tissue

Who was the first to coin the term 'cells' after observing cork under a microscope?

• Matthias Schleiden

• Robert Hooke

• Hans Janssen

• Antony van Leeuwenhoek

Which scientist was the first to observe living cells in humans and bacteria?

• Antony van Leeuwenhoek

• Theodor Schwann

• Robert Hooke

• Rudolf Virchow

What did Schwann and Schleiden propose about living organisms?

• They are made of molecules

• They are made of cells

• They are made of atoms

• They are made of tissues

What is a hypothesis in scientific terms?

• A scientific guess

• An untestable idea

• A proven fact

• An explanation based on evidence

Which of the following is NOT a tenet of the original cell theory?

• All cells come from pre-existing cells

• Cells can spontaneously generate

• Cells are the basic unit of life

• All organisms are made of one or more cells

What did Rudolf Virchow observe that contributed to cell theory?

• Cells changing shape

• Cells merging together

• Cells dividing to form new cells

• Cells forming from non-living matter

What happens to cells when a strand of hair falls out?

• They remain alive

• They die

• They multiply

• They transform

What is the significance of cell theory in biology?

• It explains the origin of life

• It outlines the evolution of species

• It unifies the understanding of living organisms

• It describes the chemical composition of cells

What is the smallest unit that can survive independently from its organism?

• A cell

• A tissue

• A molecule

• An atom