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Multiple Choice
Which of the following is the smallest functional unit in both a bacterium and a mammal?
A
Nucleus
B
Mitochondrion
C
Ribosome
D
Cell
Verified step by step guidance
1
Understand the concept of a functional unit: In biology, a functional unit is the smallest component that can perform all the necessary functions of life.
Identify the components listed: Nucleus, Mitochondrion, Ribosome, and Cell.
Consider the role of each component: The nucleus is the control center of a cell, the mitochondrion is the powerhouse of the cell, and the ribosome is involved in protein synthesis.
Recognize that a cell is the smallest unit of life that can perform all life processes, including metabolism, growth, and reproduction.
Conclude that the cell is the smallest functional unit in both a bacterium and a mammal, as it is capable of performing all necessary life functions independently.