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Levels of Organization
Transcript of Levels of Organization
Levels of Organization
Atoms are the most basic form of chemical energy. All matter on the Earth is made from atoms. The atom makes up every other level of organization.
Molecules are made from atoms bonded together. This can include two of the same atoms, or two different atoms. This is the smallest unit that can take place in a chemical reaction.
Both compounds and molecules are extremely similar. Compounds are molecules that are made of two different atoms or elements. For example, water is an example of a compound because it is made of hydrogen and oxygen.
The cell is the smallest unit of life. Most single cellular units of life are either eukaryotic or prokaryotic. A cell normally consists of cytoplasm and a nucleus enclosed by a membrane.
A tissue is a material which animals and plants are made of that are often very distinctive. Tissues are made of specialized cells that serve a certain purpose for the organism. These specialized cells make up bigger specialized items known as organs.
This is a part of an organism that serves an extremely special and vital purpose. Examples of organs are the heart and liver which most animals have. Organs are distinc parts of the body that are often adpated to special functions and grouped with similar organs to carry out a larger process.
Organ systems are made of multiple organs that serve a purpose to carry out a larger and more difficult process. An example of this is the digestive system. This contains the esophagus, stomach, small intestine, and large intestine.
Organisms can range from a single celled unit of life to a full human body. Organisms carry out life processes, and are made of cells no matter the size. An individual animal, plant, or single cell unit are considered organisms.
A population is the amount of animals or plants which are the same living in a specific area. Scientists like to study the effects of certain populations in areas or regions of the earth. An example of a population would be a certain type of flower in one part of a field.
A community is the relationship between different groups of species. An example of a desert community would be snakes, rabbits, mice, coyotes, birds, and plants like cacti. Although, communities can be destroyed or altered by things such as human interaction or natural disaster.
This is the interaction and relationship between smaller groups of species and their environment. Ecosystems evolve through organisms maintaining homeostasis and adapting to their environment and ecosystem. Ecosystems do experience numerous changes depending on seasons, natural disasters, and human interaction.
A biome is a naturally occurrng community of flora or fauna. A tundra or rainforest would be an example of a known biome. There are 5 major biomes on Earth, most are defined by their climate and vegitation.
The biosphere conists of all living creatures from the top of the sky to the bottom of the ocean. Wherever life occurs is part of the biosphere. This is one of the five divisions of the Earth, the others being atmosphere (air), lithosphere (earth), and hydrosphere (water).