Search results
Results from the WOW.Com Content Network
Define a cell, identify the main common components of human cells, and differentiate between intracellular fluid and extracellular fluid; Describe the structure and functions of the plasma (cell) membrane; Describe the nucleus and its function; Identify the structure and function of cytoplasmic organelles
cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.
The interior of human cells is divided into the nucleus and the cytoplasm. The nucleus is a spherical or oval-shaped structure at the center of the cell. The cytoplasm is the region outside the nucleus that contains cell organelles and cytosol, or cytoplasmic solution. Intracellular fluid is collectively the cytosol and the fluid inside the ...
Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life. Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane.
Describe the general characteristics of each of the following cell types and relate their characteristics to their functions: nerve cell, muscle cell, red blood cell (erythrocyte), and white blood cell (leukocyte). The different organ systems each have different functions and therefore unique roles to perform in the body.
Diagram of the human cell illustrating the different parts of the cell. The cell membrane is the outer coating of the cell and contains the cytoplasm, substances within it and the organelle. It is a double-layered membrane composed of proteins and lipids.
Cells all have the same basic structure and consist of three parts: the cell membrane, the cytoplasm, and the nucleus
Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope. Cells emerged on Earth about 4 billion years ago.
A cell is the smallest living organism and the basic unit of life on earth. Together, trillions of cells make up the human body. Cells have three parts: the membrane, the nucleus, and...
Cells are the basic building blocks of the body. All tissues and organs are made of billions of different cells. Human cells vary in size, but all are quite small. Even the largest, a fertilized egg, is too small to be seen with the naked eye. All cells in a person's body are descendants of two cells, the mother's egg and the father's sperm.