(Lire) PDF The Cell: The Origin of Life
By Jack Challoner
The cell is the basic building block of life. In its 3.5 billion years on the
planet, it has proven to be a powerhouse, spreading life first throughout
the seas, then across land, developing the rich and complex diversity of
life that populates the planet today. ? ??????????? With The Cell: The
Origin of Life, Jack Challoner treats readers to a visually stunning tour of
these remarkable molecular machines. Most of the living things we?re
familiar with?the plants in our gardens, the animals we eat?are composed
of billions or trillions of cells. Most multicellular organisms consist of many
different types of cells, each highly specialized to play a particular
role?from building bones or producing the pigment in flower petals to
fighting disease or sensing environmental cues. But the great majority of
living things on our planet exist as single cells. These cellular singletons
are every bit as successful and diverse as multicellular organisms, and our
very existence relies on them. The
