Sentences with phrase «higher organisms»

Stanford University About Blog The Saccharomyces Genome Database (SGD) provides comprehensive integrated biological information for the budding yeast Saccharomyces cerevisiae along with search and analysis tools to explore these data, enabling the discovery of functional relationships between sequence and gene products in fungi and higher organisms.

Life actively contributed to the creation and maintenance of conditions on Earth that are favourable for higher organisms.

Of far greater concern than corals in particular is the ocean food chain in general, because while acidification will probably result in more oceanic dead zones as the amount of CO2 goes up and the amount of oxygen falls, if you kill off the plankton and pteropods that use carbonate to make their shells, then you kill off the food supply for the vast majority of higher organisms (like mollusks, fish, and even marine mammals).

And yet it is only by means of making this sort of change to our civilization that we are likely ever to get to the point at which we engaging in the sort of genetic engineering and bending of higher organisms to our purposes that he envisions.

«We found that adding a small amount of glucose to the medium (0.1 - 2 %) shortened the lifespan of C. elegans... Together these findings raise the possibility that a low - sugar diet might have beneficial effects on lifespan in higher organisms»

Science also is showing that leptin controls the healthy phenotype imparted by calorie restriction in so - called higher organisms that use fat as a primary fuel.

So tell us something about how that period was for you, and your transition from prokaryotes to higher organisms.

The selected variants 1 — 3 perform well in the higher organisms as well as in bacterial systems, while the artificially engineered variants do not translate forward.

Lacking such a mechanism, the silver could have adverse effects on higher organisms, given that algae are at the bottom of the food chain.

We have identified the coral homologs of many of the key molecules that are involved in apoptotic and cell death pathways in higher organisms.

Drosophila research has a long history of important discoveries in the biomedical field, leading to significant applications in higher organisms, including humans.

It's likely, researchers surmise, that higher organisms also disappeared as a result.

And the slug protein work suggested an unexpected new mechanism for long - term memory in higher organisms as well.

Although lacking specialized cell types found in higher organisms and unsusceptible to cancer, Simon said that yeast is often a suitable model for preliminary drug screening before the drug's potential is evaluated in mammalian cells.

Additional file 7: All identified Pfam domains in transcripts that lacked any sequence similarity to higher organisms.

These should involve basic and applied biologists, including those with expertise in microorganisms or in higher organisms; informaticians and mathematicians, who can develop methods that extract information from the mountains of sequence data; and chemists, physicists and engineers.

Now it appears this process is native to other viruses and many higher organisms

One of the features that makes higher organisms unique is their cytoskeleton — a scaffolding of proteins that controls cell shape.

«Most higher organisms are arthropods, and most arthropods are insects, and most insects are beetles,» says ecologist Andrew Hamilton of the University of Melbourne in Australia, author of the new study.

Some simple organisms like bacteria can survive without oxygen, but all higher organisms need oxygen and Earth's biology would probably be a poor sight, if the atmosphere did not contain the 21 percent oxygen, which is essential for the human brain to function, for example.

To see if this same result held true in higher organisms, Gerton's team treated cancer cells from Li's mice with four different DNA damaging drugs.

Repetitive DNA sequences play a surprising role in how bacteria — and perhaps higher organisms — adapt to their environments.

«The complexity of higher organisms doesn't appear to be due to a higher number of genes, but in the more complex ways that those higher organisms use those genes,» says James Galagan of the Whitehead Institute at the Massachusetts Institute of Technology in Cambridge, who led the research team.

«Our new knowledge of the function of Abd - B helps us to better understand how these processes are regulated in higher organisms, including vertebrates,» explains Ingrid Lohmann.

The toxic form of the element is methylmercury, which is toxic to the nervous system and can move up the food chain as higher organisms accumulate the methylmercury present in their prey.

Their end goal is to identify specific populations of neurons in the fruit fly brain that are necessary for emotion primitives — and whether these functions are conserved in higher organisms, such as mice or even humans.

Another gene active in the peduncle is related to one that, in higher organisms, functions prominently in embryonic heart tissue.

After about two billion years, it enabled the evolution of the many higher organisms that respire on oxygen, including us.

The group, which conducted the study under the auspices of the National Science Foundation - funded Center for Sustainable Nanotechnology at UW - Madison, also plans to study the effects of NMC on higher organisms.

In a report of their preliminary results, published in the 26 April issue of the American journal Proceedings of the National Academy of Sciences, the researchers note that the lengths of DNA that would code for such protein segments — 450 nucleotides for prokaryotes and 375 for higher organisms — fall in the range of sizes that previous studies have found to be optimal for forming circular segments of DNA.

But slower - to - reproduce creatures such as fish and other higher organisms will struggle to survive.

Still, life is full of cooperation, from the single cells that joined to form higher organisms to the construction of cities by humans and intricate communal nests by ants.

«We hope our approach will be used to further identify new growth inhibitors and their targets across bacterial species and in higher organisms.»

But they don't have the slop of higher cells and higher organisms.

We generally assume that primitive organisms are not sensitive to as many different kinds of stimuli as higher organisms are and that the sensory systems evolve to give organisms access to more and more types of stimuli.

The higher organisms which most interest us thus can be analyzed into complexly - related levels of social order.

This does not mean that something very like self - conscious human purpose is to be found in amoebae, but it does mean that there must be some continuity between an amoeba's response to its environment and the response of higher organisms (including human ones) to theirs.

We are by now beginning to get quite good answers to this question as regards bacteria, and are even approaching it for higher organisms.

It seems possible that there may be physical laws expressing the modification of the ultimate basic organisms when they form part of higher organisms with adequate compactness of pattern.

To the extent that «error is the mark of the higher organisms,» a nuclear mistake would eliminate this natural gradation.

In fact most higher organisms select their environment before they allow the environment to select them.

In vegetables and perhaps in very simple animals no such dominant occasion occurs, but in the higher organisms, especially where a fully developed central nervous system and brain is found, there is strong indication of centralized control of many aspects of the animals behavior.

But their protest, while notable, only allows them to escape the destruction of some of the higher organisms.

According to Creative Evolution, the nervous system in higher organisms necessitates its support systems.

Similarly, the aims for most living occasions include no (or few) hybrid prehensions, whereas the aim for a dominant occasion in an animal organism is heavily weighted toward hybrid prehensions of past dominant occasions, which in the case of higher organisms jointly constitute the soul or living person.

In the higher organisms, including man, a complex set of neural and humoral regulatory mechanisms preserve the stability of the metabolic processes within very narrow limits, despite substantial changes in the external environment.

Each evolutionary event is conditioned by the whole preceding history of the species, by the environment in which it occurs, and possibly, in higher organisms with developed nervous systems, by the behavioral reactions of these organisms.

At that point in Science and the Modern World where Whitehead observes: «The relation of part to whole has the special reciprocity associated with the notion of organism, in which the part is for the whole»; he confirms: «but this relation reigns throughout nature and does not start with the special case of the higher organisms» [SMW 149].

A higher organism, Bergson states, is essentially a neuromotor system installed on systems of digestion, respiration, secretion, etc., «whose essential function is to cleanse and protect it...» (CE 124; cf. also 121, 123, 126, 252) A Bergsonian temporal hierarchy in a higher organism must then be essentially threefold: Consciousness, brain and nervous system, and motor system, with the rhythms of the first «extending over» the second and those of the second over the third.

«Every cell type in a higher organism has a particular biology,» he says.