CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT a part of cell theory?
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All cells are produced from existing cells
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All cells have organelles and nuclei
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Cells are the basic unit of structure and function
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Plants and animals are made up of cells
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Explanation:
Detailed explanation-1: -The correct option is C All cells are surrounded by cell wall. Schleiden, Schwann and Virchow contributed to the formation of cell theory.
Detailed explanation-2: -Cell wall is only found in plant cells and not in any other cells.
Detailed explanation-3: -Only the cells of advanced organisms, known as eukaryotes, have a nucleus. Generally there is only one nucleus per cell, but there are exceptions, such as the cells of slime molds and the Siphonales group of algae. Simpler one-celled organisms (prokaryotes), like the bacteria and cyanobacteria, don’t have a nucleus.
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