Human Biology (MindTap Course List)

11th Edition
Cecie Starr + 1 other
ISBN: 9781305112100



Human Biology (MindTap Course List)

11th Edition
Cecie Starr + 1 other
ISBN: 9781305112100
Textbook Problem

Starting with cells, nature is organized on at least _______ levels.

Summary Introduction

Introduction: Biological organization is based on the structural and functional hierarchy of living organisms. Levels of hierarchy range from complex systems to simple components through a reductionist approach. Hierarchy of life ranges from the biosphere to molecules.


The levels of biological organization starting with cells are as follows:

  • Different types of cell organelles together form a cell, the basic unit of life.
  • In a multicellular organism, a group of cells forms a tissue.
  • One or more types of tissues, each having a specific function, combine and form an organ.
  • Several organs each with different functions together form an individual organism.
  • A group of similar organisms with a similar set of characteristics form a single species.
  • A group of individuals belonging to the same species and living in a specific area is collectively called as a population.
  • In a given area or an ecosystem, the populations of different flora and fauna species interact together and form a community.
  • All the communities of living organisms (the biotic factors) and the abiotic factors, such as soil, air, water, and climate conditions, present in a specific area form an ecosystem...

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