OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cells are the basic units of life.
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All living things are made of at least one cell.
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Very few cells reproduce.
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All cells arise from existing cells
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Detailed explanation-1: -The correct option is C All cells are surrounded by cell wall.
Detailed explanation-2: -Viruses lack the typical structure of a cell and donot perform any functions of a cell hence cell theory is not applicable to viruses.
Detailed explanation-3: -The correct answer is All cells are identical.
Detailed explanation-4: -The three tenets of the cell theory are: All organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.
Detailed explanation-5: -Prokaryotes. Prokaryotes are generally small cells that are enclosed by the plasma membrane. Eukaryotes. Eukaryotic cells have a nucleus, organelles, and a plasma membrane surrounding them. Single-celled Organisms. Cell theory can be well understood by looking at single-celled species. Plants. Animals.