Sublime
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What is a cell, anyway? In a narrow sense, a cell is an autonomous living unit that acts as a decoding machine for a gene. Genes provide instructions—code, if you will—to build proteins, the molecules that perform virtually all the work in a cell. Proteins enable biological reactions, coordinate signals within the cell, form its structural
... See moreSiddhartha Mukherjee • The Song of the Cell
Cell membranes. All cells in our body need cholesterol in their cell membranes. Without it they would disintegrate, as cholesterol provides structural integrity. •
Dr Malcolm Kendrick • The Great Cholesterol Con: The Truth About What Really Causes Heart Disease and How to Avoid It
all living things are made up of cells –
Pier Luigi Luisi • The Emergence of Life: From Chemical Origins to Synthetic Biology
And finally, a cell is a dividing machine. Molecules within the cell—proteins, again—initiate the process of duplicating the genome. The internal organization of the cell changes. Chromosomes, where the genetic material of a cell is physically located, divide. Cell division is what drives growth, repair, regeneration, and, ultimately, reproduction,
... See moreSiddhartha Mukherjee • The Song of the Cell
A healthy membrane supports the cell’s own health and, ultimately, that of the entire organism.
Pamela Kristan • Awakening in Time
La suite est un peu mieux comprise, dès lors que nos molécules initiales autoréplicatrices donnent naissance aux cellules : c’est la deuxième transition. Qu’est-ce qu’une cellule ? Une unité de vie, délimitée par une membrane, qui encapsule des ressources et des processus. La cellule assure la production des molécules nécessaires à sa réplication.