OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All non-living things are made of cells
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All cells come from pre-existing cells
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Cells are the basic unit of structure and function of all living things
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None of the above
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Detailed explanation-1: -All living cells do not have cell walls. It is unique to plants, fungi and bacteria. So, it is not a postulate of the cell theory.
Detailed explanation-2: -The correct option is C All cells are surrounded by cell wall.
Detailed explanation-3: -Viruses are not true cells. They lack the most important part of the cell, the protoplasm. Hence, the cell theory is not applicable to viruses.
Detailed explanation-4: -A cell is the smallest unit that is typically considered alive and is a fundamental unit of life. All living organisms are composed of cells, from just one (unicellular) to many trillions (multicellular). Cell biology is the study of cells, their physiology, structure, and life cycle.
Detailed explanation-5: -Thus, option D is correct that is, Water is not made up of cells.