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6 Cards in this Set
- Front
- Back
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CELL THEORY
What are the three tenets of cell theory? |
1. All organisms are made up of one or more cells.
2. Cells are the smallest structures that perform the processes essential to life. 3. All new cells arise from the division of existing cells. |
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All organisms can be defined according to a set of what common characteristics?
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1. They are made of one or more cells.
2. They use energy obtained from the environment to perform their life functions. 3. They maintain stable internal conditions through a process called homeostasis. 4. They reproduce. |
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What are the eight themes of biology?
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Cell Theory
Hierarchical organization of life Heredity Evolution Regulation Structure and function Environmental interactions Energy Flow |
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HIERARCHICAL ORGANIZATION OF LIFE
What are the 13 structures that make up life, from smallest to largest? |
Atoms
Molecules Organelles Cells Tissues Organs Organ systems Organisms Populations Species Communities Ecosystems Biophere |
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HEREDITY
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All organisms contain DNA, the genetic code of life. Biological information, in the form of genes, in inherited from parents in one generation by the offspring in the next. Heredity works to gradually bring about change in a species through interactions between individual organisms and their environment-other organisms in their population, community, ecosystem-over the course of time. Heredity forms the basis for the process of evolution.
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EVOLUTION
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Evolution is perhaps the greatest unifying theme of biology. Every aspect of the living world, from organelles to the biosphere, can be described through the mechanisms of evolution over the billions of years of Earth's history. Biologists use evolution to explain the great diversity of life on Earth.
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