12 Questions
Who first discovered the cells in a cork slice?
Robert Hooke
Who discovered the free-living cells in pond water for the first time?
Leeuwenhoek
Who coined the term 'protoplasm' for the fluid substance of the cell?
Purkinje
Which two biologists presented the cell theory that all plants and animals are composed of cells?
Schleiden and Schwann
Who suggested that all cells arise from pre-existing cells, further expanding the cell theory?
Virchow
What activity was conducted to observe similar small structures in onion bulbs of different sizes?
Making mounts of onion peels of different sizes
What invention made it possible to observe and understand the complex structure of the cell and its various organelles?
The electron microscope
What is the term used to describe organisms that are made up of a single cell?
Unicellular organisms
How do cells in multicellular organisms differ from those in unicellular organisms?
Cells in multicellular organisms assume different functions, unlike cells in unicellular organisms
What is the process by which new cells are produced from pre-existing cells?
Mitosis
Which activity involves preparing temporary mounts of leaf peels, root tips of onions, or peels of onions of different sizes?
Investigating cell structure differences
What does the discovery of some organisms having cells of different kinds imply?
Cell specialization exists in some organisms
Explore the similarities and differences in structures observed when preparing temporary mounts of Chlamydomonas, Paramecium, and bacteria from onion peels of different sizes. Discover how these small structures come together to form a structure resembling an onion bulb under the microscope.
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