Quotes About Molecules

In the parallel universe the laws of physics are suspended. What goes up does not necessarily come down, a body at rest does not tend to stay at rest and not every action can be counted on to provoke an equal and opposite reaction. Time, 'too, is different. It may run in circles, flow backward, skip about from now to then. The very arrangement of molecules is fluid: Tables can be clocks, faces, flowers.

"You," your joys and your sorrows, your memories and your ambitions, your sense of personal identity and free will, are in fact no more than the behavior of a vast assembly of nerve cells and their associated molecules.

A person's mental activities are entirely due to the behavior of nerve cells, glial cells, and the atoms, ions, and molecules that make them up and influence them.

My own training is in the field of neuroendocrinology and I really became very fascinated many years ago with the molecules of emotion, molecules that we call neuropeptides.

In the universe of possibilities that exist for life, we've shown that it is a very easy possibility for life as we know it to include silicon in organic molecules. And once you can do it somewhere in the universe, it's probably being done.

How does the sequence of bases on the DNA direct the construction of protein molecules?

In particular, the three-dimensional shape of a protein gives it a hand-in-glove fit with other equally specified and complex molecules or with simpler substrates, enabling it to catalyze specific chemical reactions or to build specific structures within the cell. Because of its three-dimensional specificity, one protein cannot usually substitute for another.

Origin-of-life simulation experiments increasingly suggested that simple chemicals do not arrange themselves into complex information-bearing molecules, nor do they move in life-relevant directions—unless, that is, biochemists actively and intelligently guide the process.

The olfactory sensors of dogs, he said, had evolved over millions of years to be able to detect a handful of molecules, and that kind of sensitivity is extremely difficult to match, even with our most finely tuned sensors. It's likely that we will continue to rely on dogs at airports for the foreseeable future.

The sheer number of ways that twenty distinct amino acids can be linked in a long chain makes this evident: for a chain with one hundred and fifty amino acids (a small protein), there are about 10195 different arrangements, far larger than the number of particles in the observable universe.

Biological behavior can be controlled by invisible forces, including thought, as well as it can be controlled by physical molecules like penicillin, a fact that provides the scientific underpinning for pharmaceutical-free energy medicine.

On Titan the molecules that have been raining down like manna from heaven for the last 4 billion years might still be there largely unaltered deep-frozen awaiting the chemists from Earth

Those are some of the things that molecules do, given four billion years of evolution

When you look more generally at life on Earth, you find that it is all the same kind of life. There are not many different kinds; there's only one kind. It uses about fifty fundamental biological building blocks, organic molecules.

I am a collection of water, calcium and organic molecules called Carl Sagan. You are a collection of almost identical molecules with a different collective label. But is that all? Is there nothing in here but molecules? Some people find this idea somehow demeaning to human dignity. For myself, I find it elevating that our universe permits the evolution of molecular machines as intricate and subtle as we.

The same few dozen organic molecules are used over and over again in biology for the widest variety of functions.

You are a collection of almost identical molecules with a different collective label. But is that all? Is there nothing in here but molecules? Some people find this idea somehow demeaning to human dignity. For myself, I find it elevating that our universe permits the evolution of molecular machines as intricate and subtle as we.

The tar is an extremely rich collection of complex organic molecules, including the constituent parts of proteins and nucleic acids. The stuff of life, it turns out, can be very easily made.

I'm frequently asked, "Do you believe there's extraterrestrial intelligence?" I give the standard arguments—there are a lot of places out there, the molecules of life are everywhere, I use the word billions, and so on.

Any time a magnet wiggles, no matter how small it is, or how fast or slow it wiggles, it makes some kind of light. Most light is made by little magnets called molecules, and our eyes are tuned to a very narrow range of it.

A friend in southern Utah has for years managed great comfort from the thought that on his own death and cremation, the molecules of his body will be released, taken up by hundreds of other life forms. "That's immortality, brother!

over 80 percent of noncoding DNA is involved with regulating the production and assembly of gene-encoded proteins. A major discovery also found that "dark" DNA contains mechanisms by which environmental information can be used to modify the readout of protein-encoding genes. It turns out that dark DNA uses epigenetic mechanisms that enable a human cell with 19,000 gene blueprints to code for over a hundred thousand different protein molecules!

Chromosomes were chemical mixtures, including proteins as well as a mysterious molecule called deoxyribonucleic acid, or DNA for short.

When a cell divides, it needs another army of molecules to make a second copy of its DNA.