Describe the structure of a cell.
Describe the structure of a cell.
The cell is the basic structural, functional and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the "building blocks of life".
There are many different types, sizes, and shapes of cells in the body. For descriptive purposes, the concept of a generalized cell is introduced that includes features from all cell types. A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of minuscule but distinct structures called organelles.
Components of the cell are enclosed in a membrane. This membrane provides shape to the cells of plants and animals. A cell wall is an additional covering over the cell membrane in plant cells. It gives shape and rigidity to these cells.
Cell membrane: It separates the cells from their external environment. Cell membranes also protect the cell from injury.
Cytoplasm: it contains raw materials and provides the same to cell organelles for their functioning.
Nucleus: It stores genetic information in chromosomes that can be passed on to daughter cells. The nucleus controls the overall cell metabolism and other activities.
Chromosomes: these contain genes. All the hereditary information is located in the genes. Chromosomes control cell division and cell growth.
Mitochondria: These are called powerhouses of the cell because food is oxidized inside them and energy that is liberated from it helps in performing various energy-requiring processes.
Vacuoles: They play an important role in cell enlargement. Vacuoles store food, waste and water.
The cell is the basic structural, functional and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the "building blocks of life".
There are many different types, sizes, and shapes of cells in the body. For descriptive purposes, the concept of a generalized cell is introduced that includes features from all cell types. A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of minuscule but distinct structures called organelles.
Components of the cell are enclosed in a membrane. This membrane provides shape to the cells of plants and animals. A cell wall is an additional covering over the cell membrane in plant cells. It gives shape and rigidity to these cells.
Cell membrane: It separates the cells from their external environment. Cell membranes also protect the cell from injury.
Cytoplasm: it contains raw materials and provides the same to cell organelles for their functioning.
Nucleus: It stores genetic information in chromosomes that can be passed on to daughter cells. The nucleus controls the overall cell metabolism and other activities.
Chromosomes: these contain genes. All the hereditary information is located in the genes. Chromosomes control cell division and cell growth.
Mitochondria: These are called powerhouses of the cell because food is oxidized inside them and energy that is liberated from it helps in performing various energy-requiring processes.
Vacuoles: They play an important role in cell enlargement. Vacuoles store food, waste and water.
