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.
Membrane transport. In cellular biology, membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lipid bilayers that contain proteins embedded in them.