Task 1 A
Humans are multi-cellular animals. That means we are made of lots of cells, not just one cell. The cells in many multi-cellular animals and plants are specialised, so that they can share out the processes of life. They work together like a team to support the different processes in an organism.
All About Animal Cells
Animal cells usually have an irregular shape, and usually contain; cell membrane, cytoplasm and nucleus. Animal cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, DNA in animal cells is within the nucleus.
In addition to having a nucleus, animal cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a many responsibilities that include everything from producing hormones and enzymes to providing energy for animal cells.
Animal Cells: Organelles and Components
The following are examples of structures and organelles that can be found in typical animal cells:
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Animal Cell Structure
Animal organisms can be composed of trillions of cells. These cells come in all shapes and sizes and their structure suits their function. For example, the body's nerve cells or neurons have a vastly different shape and function than red blood cells. Nerve cells transport electrical signals throughout the nervous system. They are elongated and thin, with projections that extend out to communicate with other nerve cells in order to conduct and transmit nerve impulses. The major role of red blood cells is to transport oxygen to body cells. Their small, flexible disc shape enables them to maneuver through tiny blood vessels to deliver oxygen to organs and tissues.
All About Animal Cells
Animal cells usually have an irregular shape, and usually contain; cell membrane, cytoplasm and nucleus. Animal cells are eukaryotic cells, or cells with a membrane-bound nucleus. Unlike prokaryotic cells, DNA in animal cells is within the nucleus.
In addition to having a nucleus, animal cells also contain other membrane-bound organelles, or tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Organelles have a many responsibilities that include everything from producing hormones and enzymes to providing energy for animal cells.
Animal Cells: Organelles and Components
The following are examples of structures and organelles that can be found in typical animal cells:
.
Animal Cell Structure
Animal organisms can be composed of trillions of cells. These cells come in all shapes and sizes and their structure suits their function. For example, the body's nerve cells or neurons have a vastly different shape and function than red blood cells. Nerve cells transport electrical signals throughout the nervous system. They are elongated and thin, with projections that extend out to communicate with other nerve cells in order to conduct and transmit nerve impulses. The major role of red blood cells is to transport oxygen to body cells. Their small, flexible disc shape enables them to maneuver through tiny blood vessels to deliver oxygen to organs and tissues.