Common to Both Prokaryotes and Eukaryotes:
* Plasma Membrane: A thin, flexible barrier that encloses the cell, regulating what enters and exits.
* Cytoplasm: The jelly-like substance within the cell where many chemical reactions occur.
* DNA (Deoxyribonucleic Acid): The genetic material that carries the instructions for building and maintaining the cell.
* In prokaryotes, DNA is typically a single, circular molecule located in a region called the nucleoid.
* In eukaryotes, DNA is organized into multiple, linear chromosomes within a nucleus.
* Ribosomes: Tiny structures responsible for protein synthesis (making proteins).
Eukaryotes Only (Plant, Animal, Fungi, Protists):
* Nucleus: The central control center of the cell containing DNA and controlling cellular activities.
* Organelles: Specialized structures within the cytoplasm that carry out specific functions. Some key examples:
* Endoplasmic Reticulum (ER): A network of membranes involved in protein and lipid synthesis.
* Golgi Apparatus: Processes, packages, and distributes proteins and lipids.
* Mitochondria: Powerhouse of the cell, responsible for generating energy (ATP).
* Lysosomes: Contain digestive enzymes to break down waste materials.
* Vacuoles: Storage compartments for water, nutrients, and waste.
Plants Only:
* Cell Wall: A rigid outer layer made of cellulose that provides support and protection.
* Chloroplasts: Sites of photosynthesis, where sunlight is converted into chemical energy.
Important Note: This is a simplified overview. Cells are incredibly complex structures with many other components.
