Multiple Choice
How did Rudolf Virchow contribute to the development of the cell theory?
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1. Overview of Cell Biology
History of Cell Biology
Multiple Choice
In the history of cell biology, which set correctly lists the three core tenets of classical cell theory?
A
Cells are the smallest unit of heredity; all cells use oxygen for respiration; new cells form only during embryonic development.
B
All living organisms are composed of one or more cells; the cell is the basic unit of structure and function in living things; all cells arise from pre-existing cells.
C
All cells contain a nucleus; all organisms are multicellular; cells arise spontaneously from nonliving matter.
D
All cells have identical organelles; the cell membrane is the site of DNA replication; all cells arise from pre-existing tissues.
Verified step by step guidance1
Recall the historical development of classical cell theory, which was formulated in the 19th century by scientists such as Schleiden, Schwann, and Virchow.
Identify the three fundamental principles of classical cell theory: (1) All living organisms are composed of one or more cells, (2) The cell is the basic unit of structure and function in living things, and (3) All cells arise from pre-existing cells.
Evaluate each option by comparing it to these three core tenets, noting that classical cell theory does not include statements about heredity units, oxygen use, spontaneous generation, or identical organelles.
Recognize that the correct set of statements must reflect the universal applicability of cells to all living organisms, their role as the fundamental unit, and the continuity of life through cell division.
Conclude that the correct answer is the option stating: 'All living organisms are composed of one or more cells; the cell is the basic unit of structure and function in living things; all cells arise from pre-existing cells.'
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