Pronunciation: [sˈa͡ɪtə͡ʊmmbɹˌe͡ɪn] (IPA) 
The word cytomembrane is spelled using the prefix cyto- meaning "cell" and the word membrane. The IPA phonetic transcription for this word is /saɪtəʊˈmɛmbreɪn/. The stress is on the second syllable, and the /ʊ/ vowel sound is pronounced like "uh". Cytomembrane refers to the membrane surrounding a cell's cytoplasm. Proper spelling is important in scientific writing to ensure accuracy and clarity of communication.
Cytomembrane, also known as the cell membrane or plasma membrane, is a semipermeable membrane that encloses the cytoplasm of a cell. It is a vital component of all living cells and acts as a barrier between the internal cellular environment and the external surroundings.
The cytomembrane is composed of a phospholipid bilayer, which consists of two layers of phospholipid molecules. Each phospholipid molecule has a hydrophilic (water-loving) head and hydrophobic (water-repelling) tail. These phospholipid molecules arrange themselves in such a way that the hydrophilic heads are on the outer and inner surfaces of the membrane, while the hydrophobic tails face each other in the middle of the bilayer.
In addition to phospholipids, the cytomembrane contains proteins, glycoproteins, cholesterol, and various other molecules. These components play crucial roles in various cellular processes, such as cell signaling, transport of ions and molecules, and cell adhesion.
The cytomembrane is selectively permeable, meaning it allows some substances to pass through while restricting the movement of others. Small molecules like oxygen and carbon dioxide can diffuse freely across the membrane, while larger molecules and ions require specialized transport proteins to move in and out of the cell.
Overall, the cytomembrane maintains the integrity of the cell, regulates the exchange of materials, and plays an essential role in many cellular functions.
The word "cytomembrane" is derived from the combination of two Greek roots: "cyto" and "membrane".
1. "Cytos" (κύτος) is a Greek word meaning "cell". It is derived from the Proto-Indo-European root "keu" meaning "to swell".
2. "Membrane" (μεμβράνη) is also a Greek word meaning "thin skin" or "parchment". It is derived from the Proto-Indo-European root "men" meaning "to project" or "stand out".
When combined, "cyto" refers to the cell, and "membrane" describes the thin layer or barrier that surrounds and protects the cell. Therefore, "cytomembrane" refers to the membrane of the cell.
