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Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate, sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate. The buffer helps to maintain a constant pH.
17 lut 2021 · To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.
4 gru 2014 · PLoS Biology: Bit by bit: the Darwinian basis of life. Gerald Joyce, who studies the origin of life and the role of RNA in Earth’s earliest life, discusses how information theory can be applied...
Paleontologist Andrew Knoll, professor of biology at Harvard University, describes how scientists go about trying to understand the long-ago transition from non-living to living.
3 wrz 2024 · The several branches of science that reveal the common historical, functional, and chemical basis of the evolution of all life include electron microscopy, genetics, paleobiology (including paleontology), and molecular biology.
12 paź 2012 · These understandings of life are grounded on fundamentally different world-views and address different questions about life: how does life function? How do we recognize life? What is the value of life? What is the meaning of life? How do we perceive life?
3 wrz 2024 · The origin of life is a result of a supernatural event—that is, one irretrievably beyond the descriptive powers of physics, chemistry, and other science. Life, particularly simple forms, spontaneously and readily arises from nonliving matter in short periods of time, today as in the past.
