Page 1: Fundamental Cell Concepts and Structures

The first page introduces core cellular concepts and essential components of cell biology. The cell theory forms the foundation of modern biological understanding, emphasizing the cellular basis of all living organisms. This section details various cellular structures and their functions, particularly focusing on membrane systems and nuclear components.

Definition: Cell theory establishes that all living things are composed of cells, which are the basic units of structure and function, and that new cells come from existing cells.

Vocabulary: Eukaryotes are organisms with cells containing a nucleus, while prokaryotes are unicellular organisms lacking a nucleus.

Highlight: The cell membrane, composed of a phospholipid bilayer, acts as a selective barrier controlling cellular transport.

Example: The cytoskeleton, a network of protein filaments, maintains cell shape and facilitates cellular movement, demonstrating the complex structural organization within cells.