Sentences with phrase «cell organisms about»

Leishmania, which are single - cell organisms about the size of large bacteria, have been a scourge in about 90 countries in South America, Africa, the Middle East, Asia and southern Europe.

Not exact matches

One of the most remarkable facts about the human body — indeed, about the great mass of living things — is that nearly every cell carries the complete genetic blueprint for the entire organism.

It matches up with the observed entire life cycle and doubling rate (about every 8 hours) of the single celled organism.

All an evolutionary storyteller has to do is to start with the apparently simplest version, ignore the neural equipment that has to be present for an organism to make any use of a «photon receptor,» and spin a charming tale about how a tiny primitive light - sensing cell might grow up to be a full - fledged eye.

The consensus on the evolution of primitive life is that simple life forms (prokaryotes, organisms whose cells lack a distinct nucleus) inhabited the Earth about 3 - 4 billion years ago, eukaryotic cells (those with a nucleus which contains the genetic material) emerging 2 - 3 billion years ago.

If he talks about the event character (1 / 10th of a second in length and all that) of the self, it is because he thinks that is what analysis of self - consciousness itself discloses and not because he means to construct the self out of subhuman individuals or organisms (Shalom's «event - cells»).

When you say miracle of life, do you mean conception of a child in todays world or are you talking about single - celled organisms at the advent of life on earth?

However, the biggest problem is that it is extremely unlikely to happen, and we are just talking about single celled organisms.

And let's remember that evolution, while it's a theory, is a theory about the beginning and the transformation of life based on things we have observed, namely that cells change and mutate and that those mutations can produce cells that are unique and new, and that it would follow that it's possible for molecules to form into single - celled organisms which mutate and combine into multi-cellular organisms which mutate, adapt, and grow over time into new forms of life.

The Theory of Evolution only talks about how life evolved from the first single celled organism up till what we have today.

To help make ideas about energy more concrete, for example, the new unit will use a variety of analogies from more familiar physical systems (e.g., combustion and charging a cellphone battery) to help students understand those same energy - releasing and energy - requiring chemical reactions and energy transfer when they occur in living organisms (e.g., cellular respiration, creating a charge across a membrane in mitochondria and nerve cells) where the reactions are more complex and difficult to observe.

But something did change about 800 million years ago, and cyanobacteria and other minute organisms in continental margin ecosystems got more phosphorus, the backbone of DNA and RNA, and a main actor in cell metabolism.

While these results suggest that boosting autophagy in the gut is generally beneficial, Hansen cautions that further research is needed: «Before we can consider regulating autophagy to manage disease, we need to learn a lot more about how the process works both in a single cell as well as in the whole organism.»

The important thing about the zebra mussel is to not consider each one as an individual organism but instead, like a cancer cell, part of a greater scourge that metastasizes as fast as currents flow.

To figure out what's really happening within an organism — or within a particular organ or cell — researchers are linking the genome with large - scale data about the output of those genes at specific times, in specific places, in response to specific environmental pressures.

At its most basic, synthetic biology is about making DNA from scratch, on scales from individual molecules to cells, tissues and even entire organisms.

Amoeba reproduction is an asexual event in which the organism doubles its genetic material, creates two nuclei and then sets about dividing into two cells.

Despite its many parts, the entire organism is a single cell of only about 10 microns in diameter, which is smaller than most cells in the human body.

But while this study has proved that the technique works in a simple organism, it could also be applied to other bacterial species, yeast or even human cells to find useful information about how genes are controlled and how they can be manipulated.

Though little is known about Loki, scientists hope that it will help to resolve one of biology's biggest mysteries: how life transformed from simple single - celled organisms to the menagerie of complex life known as eukaryotes — a category that includes everything from yeast to azaleas to elephants.

Science tells us that Earth's first single - celled organisms emerged about 3.5 billion years ago and only gradually evolved into many different species, he explained.

At that time, little was known about the molecular biology of development — how what's going on in the development process itself influences what can happen to the evolutionary trajectory of cells and organisms.

Darwin wrote about how evolution shapes the destiny of whole organisms, but its principles apply to individual cells, too.

Thanks to the organism's creation, synthetic biologists are learning more about customizing cells, such as for development of highly effective drugs and energy alternatives to fossil fuels.

«Though the degree to which human embryonic stem cells possess this feature is not entirely clear, by understanding how another complex organism's genome works we ultimately learn more about how our own genome works,» said Zhou.

As we started to try to understand the biology of these stem cells, it very quickly became clear that we needed information about the genetic content of these organisms.»

For instance, in simple organisms such as yeast, when genetic material becomes damaged, the affected DNA strands increase their motion, waving about inside the cell like a sail unfurled.

«Cell death has been widely studied but much less is known about death of whole organisms, how it happens, what triggers it, and when it begins and ends.

The central question is how, in the human organism for example, 100 000 genes have been orchestrated to yield about 250 different cell types, which then become assembled as the human body.

The goal is to not only provide broadly applicable experimental tools but also help transform the way in which we think about single cells, cell - cell interactions, diseased cellular states and therapeutics so as to create a new paradigm for understanding and designing systems - level cellular behaviors in multicellular organisms.

Researchers at Pacific Northwest National Laboratory and East China Normal University devised and tested a thin - about as thin as the skin of a soap bubble - film composed of a special type of molecules called peptoids that can repair itself, similar to the self - repair seen in cells of living organisms.

But because stem cells can become any kind of tissue, human - animal research in the field of «regenerative medicine» raises greater ethical issues and adds, for some, a visceral unease about the organism that could be produced.

One reason why we know little about this process of telomerase silencing is because specific telomerase regulation naturally occurs only in human cells but not in mouse cells, a widely used model organism where telomerase is active in all cell types.

«The CREATE system gave us a good hit early on, but we are excited about the future potential of using this approach to generate viruses that have very good cell - type specificity in different organisms, especially the less genetically tractable ones,» says Gradinaru.

These newly identified organisms might have a big impact on our understanding of the deeper branches of the tree of life giving us new hints about the emergence of the eukaryotic cell.

A mass extinction about 200 million years ago, which destroyed at least half of the species on Earth, happened very quickly and is demonstrated in the fossil record by the collapse of one - celled organisms called protists, according to new research led by a University of Washington paleontologist.

Although experimental mammalian genetics with the use of ES cells and the techniques pioneered by my co-awardees is now well founded and used, there is still much to be learned and much interesting research in store about what genes really do in the context of the real biology of the whole organism in a complex environment.

About — Phytoplankton are microscopic one celled organisms, too small to be seen by the naked eye, but when they are in high enough numbers appear as a greenish discoloration in water.

But we're not talking about single - celled organisms sitting on a therapy couch, here — we're talking about the humans who host them in our bodies, and how we think -LSB-...]

Some researchers suggest that of the 100 trillion cells of our body, about 90 trillion are parasites, bacteria, fungi, viruses and other organisms!

I do love the opening, a quick montage showcasing Minion evolution from single - celled organisms to their full - sized birth into a carnivorous world they're overjoyed about helping the most loathsome rule.

Scientists don't know a lot about this one - celled organism.

Perhaps to underscore his point, he said that a new project, a piece to be included in an upcoming show organized by the artist Tino Sehgal at the Palais de Tokyo in Paris, will include organisms of a kind that few want to think about, much less admire as art: living cancer cells, donated by the Curie Institute.

By measuring the levels of magnesium to calcium in the shells of Hyalinea balthica, a one - celled organism buried in those sediments, the researchers estimated the temperature of the middle - depth waters where H. Balthica lived, from about 1,500 to 3,000 feet down.

So there is the first bit of information: If you do not believe that the climate is warming on a global scale then in terms of evolution you are less knowledgeable about your environment (less intelligent) then the great majority of animals, plants, insects, and even ocean dwelling single celled organisms like plankton.

They seek answers to questions about the structure of the universe, the formation of our solar system and other planetary systems, the behavior and transformation of matter when subjected to extreme conditions, the origin of life, the function of genes, and the development of organisms from single - celled egg to adult.

Bacterioplankton may be very abundant, numbering about 3.1 × 1028 single - celled organisms in the world ocean.

About Blog Get started with biology as we explore topics of human and cell anatomy, systems, and structures that make up the organisms of our world.