Multiple Choice
How are plant cells different from animal cells?
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5. Cell Components
Prokaryotic & Eukaryotic Cells
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What is the basic unit of all living things?
A
Molecule
B
Atom
C
Cell
D
Organ
Verified step by step guidance1
Understand that the question is asking for the fundamental unit of life, which is the smallest structure capable of performing all the functions necessary for life.
Recall the hierarchy of biological organization: atoms form molecules, molecules form organelles, organelles are part of cells, cells form tissues, tissues form organs, and organs form organ systems.
Recognize that while atoms and molecules are essential components of living organisms, they do not independently perform all life functions.
Identify that cells are the smallest unit that can carry out all life processes, such as metabolism, growth, and reproduction.
Conclude that the cell is the basic unit of all living things, as it is the smallest structure that can independently sustain life.
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