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Quote by Abhijit Naskar

“There's not one religion but two, one is commercial religion, rooted in fear, prejudice and bigotry, and the other is lived religion, rooted in kindness and inclusivity - the atheist and the believer drink from the same water, breathe the same air, eat the same food - mother nature, the actual origin of life, doesn't segregate between believer and nonbeliever, it's only the savages who do that.”

Quote by Abhijit Naskar

Book:Sonnets From The Mountaintop
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Sonnets From The Mountaintop

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Abhijit Naskar

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“your atoms don't actually care about you - indeed, don't even know that you are there. They don't even know that they are there. They are mindless particles, after all and not even themselves alive. (It is a slightly arresting notion that if you were to pick yourself apart with tweezers, one atom at a time, you would produce a mound of fine atomic dust, none of which would have ever been alive but all of which had once been you.)”

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“you and I having this conversation right now, and anyone reading the magazine, is part of an unbroken chain of communication – an interpretive process, with messages being exchanged millions of times per second, between cells and even organelles within cells, that stretches back, totally unbroken, 3.7 billion years. That’s 3.7 billion years of conversation going on between living structures in order to allow us to be here today. If there had ever been a break, even for a second, you wouldn’t be here. If you were looking for a metaphysical thought to give you a sense of overwhelming wonder, all you need is to meditate for a moment on the fact that you are part of this unbroken exchange, a conversation that goes all the way back to the puddle, or the clay-like substrate, that all life emerged from.”

LifePhilosophyScienceInformationCommunicationCellsBiologyOrigin Of Life
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“To make things even more challenging, cells must also be able to make all of their component molecular machines using only the resources that are available in the local environment. Think of the magnitude of this accomplishment. Many bacteria are able to build all of their own molecules from the a few simple raw materials like carbon dioxide, oxygen, and ammonia. A single bacterial cell knows how to build several thousand types of proteins, including motors, girders, toxins, catalysts, and construction machinery. This cell also builds hundreds of RNA molecules with different orderings of nucleotides, as well as a diverse collection of lipids, sugar polymers, and a bewildering collection of exotic small molecules. All of these different molecules must be created from scratch, using only the molecules that the cell eats, drinks, and breathes.”

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“Endrocrine cells have neither dendrites nor axons, but many are like neurons in other ways. Some are electrically exitable: when pancreatic beta cells see an increase in extracellular glucose concentration they fire in bursts of spikes that are like the phasic bursts of vasopressin neurons; these bursts lead to calcium entry and trigger insulin secretion. In both neurons and endocrine cells, peptides are packages in vesicles just as neurotransmitters are. Typically, peptide secretion is the result of the same process as that by which neurotransmitters are released: exocytosis is triggered in both cases by an increase in intracellular calcium. In neurons, this happens when spikes depolarize the neuron, opening voltage-sensitive calcium channels, and the same occurs in spiking endocrine cells. However, endocrine cells have another trick. Th cell bodies of all eukaryotic cells contain rough endoplasmic reticulum, which sequesters free calcium, and activation of receptors for some neurotransmitters or hormones can release calcium from these stores. In many endocrine cells, this 'calcium mobilization' can trigger exocytosis of vesicles without any involvement of spikes. There is no rough endoplasmic reticulum in axon terminals, so spikes are necessarily involved in the release of synaptic vesicles.”

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