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Multiple Choice
On a microscopic level, which structure is considered the basic unit of life in all living organisms?
A
Atom
B
Molecule
C
Cell
D
Organelle
Verified step by step guidance
1
Understand the concept of the basic unit of life: In biology, the basic unit of life refers to the smallest structure that can perform all the functions necessary for life, such as metabolism, growth, reproduction, and response to stimuli.
Review the characteristics of the options provided: Atoms and molecules are chemical structures that make up matter but do not perform life functions. Organelles are specialized structures within cells that perform specific tasks but cannot function independently as living units.
Focus on the cell: The cell is the smallest structure capable of performing all life processes independently. It is considered the fundamental unit of life in all living organisms.
Consider examples: Single-celled organisms like bacteria demonstrate that a single cell can carry out all life functions. Multicellular organisms are composed of many cells working together.
Conclude: Based on the definition and examples, the correct answer is 'Cell,' as it is the basic unit of life in all living organisms.