In the Java programming language, a keyword is one of 50 reserved words that have a predefined meaning in the language; because of this, programmers cannot use keywords as names for variables, methods, classes, or as any other identifier. Due to their special functions in the language, most integrated development environments for Java use syntax highlighting to display keywords in a different colour for easy identification.
Simple definition of a transport system in biology: A transport system is a means by which materials are moved (' transported ') from an exchange surface or exchange surface. to cells* located throughout the organism.* Not all individual cells require all of the many different types of materials carried by a transport system. transport system is a means by which materials are moved (' transported ') from an exchange surface or exchange surface. to cells* located throughout the organism.
Active Transport. Endocytosis and Exocytosis. The Structure of the Cell Membrane The cell membrane (or plasma membrane) surrounds all living cells, and is the cell's most important organelle. It controls how substances can move in and out of the cell and is responsible for many other properties of the cell as well.ctive Transport. Endocytosis and Exocytosis. The Structure of the Cell Membrane The cell membrane (or plasma membrane) surrounds all living cells, and is the cell's most important organelle. It controls how substances can move in and out of the cell and is responsible for many other properties of the cell as well.