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E-book Help Me Understand Genetics
Cells are the basic building blocks of all living things. The human body is composed of
trillions of cells. They provide structure for the body, take in nutrients from food, convert
those nutrients into energy, and carry out specialized functions. Cells also contain the
body’s hereditary material and can make copies of themselves.
Cells have many parts, each with a different function. Some of these parts, called
organelles, are specialized structures that perform certain tasks within the cell. The cytoskeleton is a network of long fibers that make up the cell’s structural framework.
The cytoskeleton has several critical functions, including determining cell shape,
participating in cell division, and allowing cells to move. It also provides a track-like
system that directs the movement of organelles and other substances within cells.
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