Open Question
Groups of many cells working together to perform a common function are known as a(n):
a. cell.
b. organ.
c. organ system.
d. tissue.
1
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1. Introduction to Anatomy & Physiology
Levels of Organization
Multiple Choice
Given the following 5 levels of organization, which represents the correct hierarchy from smallest to largest?
A) TissueB) OrganC) MoleculeD) CellE) Organism
A
A, D, C, E, B.
B
B, E, D, A, C.
C
C, D, A, B, E.
D
C, A, B, D, E.
Verified step by step guidance1
Begin by understanding the concept of biological organization, which is a hierarchy of complex biological structures and systems that define life using a reductionistic approach.
Identify the smallest unit in the hierarchy. In this case, 'Molecule' is the smallest level of organization, as molecules are the chemical building blocks of cells.
Next, recognize that 'Cell' is the next level of organization. Cells are the basic structural and functional units of life, composed of molecules.
Following cells, 'Tissue' is the next level. Tissues are groups of similar cells that perform a specific function.
After tissues, 'Organ' is the next level. Organs are made up of tissues that work together to perform specific activities. Finally, 'Organism' is the largest level, representing a complete living entity composed of organ systems.
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