The Journey Through Cell Discovery And The Development Of Cell Theory

The video explores the discovery of cells and the development of cell theory. It begins with the invention of the compound microscope by Zacharias Jensen and highlights contributions by Antony van Leeuwenhoek and Robert Hooke. Leeuwenhoek's observations led to the discovery of bacteria, while Hooke's book, Micrographia, introduced the term 'cell'. The video also covers the formulation of cell theory by Schleiden, Schwann, and Virchow, and concludes with advancements in microscopy, including the electron microscope, which allowed for detailed cell study.

Who invented the compound microscope in 1608?

• Matthias Schleiden

• Zacharias Jensen

• Robert Hooke

• Anthony van Leeuwenhoek

What was the magnification capability of Leeuwenhoek's microscope?

• 100-150 times

• 500-600 times

• 40-50 times

• 200-300 times

Which scientist coined the term 'cell' after observing a slice of cork?

• Theodor Schwann

• Anthony van Leeuwenhoek

• Robert Hooke

• Rudolf Virchow

What did Leeuwenhoek call the tiny moving creatures he observed in dental plaque?

• Protists

• Animalcules

• Bacteria

• Microbes

Which society did Leeuwenhoek communicate his findings to?

• The German Academy of Sciences

• The French Academy of Sciences

• The American Philosophical Society

• The Royal Society of London

Who concluded that all plants are made up of cells?

• Theodor Schwann

• Rudolf Virchow

• Max Noll

• Matthias Schleiden

What is the third clause of the cell theory?

• All organisms are made up of one or more cells.

• Cells come from pre-existing cells.

• Cells are the smallest working unit of all living organisms.

• Cells contain a nucleus.

Who invented the electron microscope?

• Max Noll and Ernst Ruska

• Anthony van Leeuwenhoek

• Robert Hooke

• Zacharias Jensen

Which of the following is NOT a common feature of all cells?

• Cytoplasm

• Plasma membrane

• Nucleus

• Ribosomes

What replaced sunlight in the electron microscope to visualize small substances?

• Gamma rays

• Ultraviolet light

• Electrons

• X-rays