Questions and Answers
What term describes a single cell that can function on its own?
Which term refers to organisms made up of more than one cell?
Who discovered living cells in a drop of pond water?
Anton Van Leeuwenhoek
Who discovered cells by examining cork under a microscope?
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Who discovered that plants are also made of cells?
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Who discovered that all animals are made of cells?
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Who proposed that new cells come from the division of pre-existing cells?
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What are the three main statements of cell theory?
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Which of the following are characteristics of prokaryotic cells?
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Which of the following describes eukaryotic cells?
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Match the following components with the classification of cells:
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Study Notes
Cell Types
- Unicellular organisms consist of a single cell capable of independent function, exemplified by bacteria.
- Multicellular organisms are composed of more than one cell, allowing for specialized functions and processes, as seen in complex life forms like humans.
Key Discoveries in Cell Biology
- Anton Van Leeuwenhoek was a pioneer in microscopy who discovered living cells by examining pond water.
- Robert Hooke identified cells for the first time by observing cork slices under a microscope, coining the term "cells."
- Matthias Schleiden contributed to the cell theory by confirming that plants are made up of cells.
- Theodor Schwann extended this idea to animals, affirming that all animal tissues are cellular in origin.
- Rudolf Virchow established that all cells arise from the division of previously existing cells, reinforcing the concept of cellular continuity.
Cell Theory Principles
- All living organisms are made up of one or more cells, forming the foundational concept of biological structure.
- The cell serves as the fundamental unit of structure and organization in all organisms.
- New cells are produced from the division of existing cells, explaining how cellular communities grow and regenerate.
Types of Cells
- Prokaryotic cells are unicellular and characterized by simplicity; they lack a nucleus and membrane-bound organelles, typical of bacteria.
- Eukaryotic cells can be either unicellular or multicellular; they contain complex structures, including a nucleus housing DNA and membrane-bound organelles.
Common Cellular Components
- Both prokaryotic and eukaryotic cells share basic components: cell wall, cell membrane, ribosomes, cytoplasm, and chromosomes, essential for cellular function.
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Description
Test your knowledge on the fundamental concepts of cell theory with these flashcards. Learn about unicellular and multicellular organisms, as well as key scientists like Anton Van Leeuwenhoek and Robert Hooke who contributed to our understanding of cells. Perfect for biology students wanting a quick review!
