Partes De Una Celula

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| | The Parts of a Cell |
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| Beetles, eagles, and elephants look nothing alike. But the cells
that make up these animals have many similar parts. All cells
have a nucleusand a cell membrane. All cells have a gel-like
liquid called cytoplasm. The different parts of a cell have special jobs. |
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| Each part of a cell helps it carry out its life processes.The
nucleus is the control center for the cell. The instructions for
the cell's activities are stored in the nucleus. The cell
membrane is the cell’s outer border. It separates the cell
from itsenvironment. It also controls what substances move
into or out of the cell. The cytoplasm contains the things that
the cell needs to carry out its life processes. |
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| Cells WorkingTogether |
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| If cells are the building blocks of life, what can they build? |
| In a many-celled plant or animal, cells are organized to work together. Different types of cells do differentkinds of work.
Groups of the same type of cell form a tissue. Groups of tissues that work together form an organ. Groups of organs that work together form systems. |
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| An organism is thehighest level of cell organization. It is a |
| complete living thing that is made from all parts in all of the
systems working together. |
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| The size and shape of a cell are relatedto the cell’s job. | | | |
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| A group of one type of cell is a tissue.
Each kind of tissue does a certain job. | | | |
| | A group of tissues
that work together
is anorgan. The
heart is one of
many organs in an animal. |
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| Organs and tissues that work |
| together form an organ system.
The heart, blood, and |
| | | || | blood vessels
are some parts
of one system. |
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| | | | Viruses |
| A virus is a very tiny particle that has characteristics of both nonliving and living things....