Sentences with phrase «multicellular life»
"Multicellular life" refers to organisms made up of many cells working together as a team, instead of just one cell. Full definition
But Dornbos said this fossil find is the latest example of multicellular life forms appearing in the preceding Ediacaran Period.
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Later, cell - cell adhesion made possible the evolution of multicellular life forms.
What triggered the explosion of complex multicellular life in the Cambrian period?
The team found fossils of two species of previously unknown ancient multicellular marine algae, what we now know as seaweed — and they're among the oldest examples of multicellular life on Earth.
The spectacular finds, publishing on 14 March in the open access journal PLOS Biology, indicate that advanced multicellular life evolved much earlier than previously thought.
If we suppose the continental - tectonic cycle is of the order of 500 Myrs, and there wasn't much multicellular life before the Cambrian, that gives us a kind of time limit within which we might look.
The Ediacarans were some of the earliest multicellular life forms.
There was an era called white earth which starts about 700 million years ago with alternating periods of deep ice sheets and then hotter warmer stages which led to formation of various kinds of crystals, and last and luckily we live in the period known as green earth, which started about 400 million years ago when multicellular life arose and wholly changed to biochemical breakdown the makeup of the minerals on the planet again.
Roughly 2.4 billion years ago, a rapid buildup of oxygen in the atmosphere set in motion big changes that allowed multicellular life to emerge.
Although the new analysis adds to evidence suggesting a massive tectonic shift caused the seas to rise more than half a billion years ago, Dalziel said more research is needed to determine whether this new chain of paleogeographic events can truly explain the sudden rise of multicellular life in the fossil record.
«World's oldest plant - like fossils show multicellular life appeared earlier than thought.»
«With OME, we think it allows myxobacteria cells to transition from a heterogeneous single cellular life to a more harmonious multicellular life.»
«Myxobacteria are unusual for bacteria in that they have a true multicellular life,» Wall says.
If the sun dimmed significantly today, the oceans would gradually freeze solid, and most multicellular life on Earth — humans included — would probably go extinct.
«Multicellular life almost didn't make it out of the Paleozoic era, but every functional group did.
At 2.1 billion years old, this fossil could be the earliest known multicellular life form.
After noting that some viruses can be crystallized, making them hard to categorize, he decides to concentrate on «comparatively highly - organised life», presumably multicellular life.
The dinosaurs may have been the unlucky victims of what American and Mexican scientists call the biggest impact on Earth «since the development of multicellular life approximately a billion years ago».
«This finding makes a deep connection between the physics of inert granular matter such as sand and the geometry of multicellular living systems,» said lead author Lior Atia, a postdoctoral fellow in the laboratory of Jeffrey Fredberg, professor of bioengineering and physiology at Harvard Chan School.
Evolution has had the luxury of tinkering around for billions of years before hitting on an exceptional solution that made multicellular life on earth possible.
But suddenly, multicellular life ballooned, knocking over the first domino in an evolutionary cascade that would one day allow you — yes, you — to exist and think and even read stuff on the Internet.
It developed a chance mutation that made its progeny stick together, eventually giving rise to the first multicellular life.
This inherent complexity arising from manifold levels of organization within multicellular life forms requires that genome maintenance, the DNA damage response (DDR) and defense strategies are tightly linked and highly coordinated processes.
The fossil record suggests complex multicellular life emerged about 600 million years ago in a relatively short period termed the «Cambrian explosion,» during which most major animal phyla appeared.
And by doing so, he became the first to identify any kind of multicellular life deep beneath Earth's surface.
Emitted in a distant galaxy when multicellular life was just beginning to populate Earth, the waves traveled at the speed of light for more than a billion years to at last wash over our planet last September, taking just seven milliseconds to traverse the distance between LIGO's twin listening stations in Louisiana and Washington State.
This would have allowed the atmosphere to hold more gas, in part shielding early life from powerful solar rays — and allowing multicellular life to evolve.
Historically, photosynthetic bacteria pumped oxygen into the oceans for billions of years, setting the stage for complex multicellular life.
data coming back to us from forays into the solar system and the real possibility in them that we might find evidence of multicellular life on Mars, and
Because extracellular matrix is the basis for existence of multicellular life forms.
They provide a crucial view of Earth's earliest evolution of multicellular life, which scientists now think started millions of years earlier than previously thought.
«Ancient seaweed fossils some of the oldest of multicellular life.»
This provocative fact allowed him to argue that cell - competition genes could be linked to the origins of multicellular life and that investigating them could help scientists understand and treat cancer.
The basic timeline is a 4600 million year old Earth with: 4000 my (million years) of simple cells; 3000 my of photosynthesis; 2000 my of complex cells; 1000 my of multicellular life; 600 my of simple animals; 500 my of fish and proto - amphibians; 475 my of land plants; 400 my of insects and seeds; 360 my of amphibians; 300 my of reptiles; 200 my of mammals; 150 my of birds; 100 my of flowers; and 65 my since the non-avian dinosaurs died out.
Then suppose that 1 per cent of these evolve multicellular life.
Without it, multicellular life wouldn't exist, a broken bone would never heal, tissues would disintegrate.
Writing in Proceedings of the National Academy of Sciences last August, marine ecologist Jeremy Jackson of the Scripps Institution of Oceanography sounded an ominous tone: «Mass extinction of multicellular life will result in profound loss of animal and plant biodiversity, and microbes will reign supreme.»
Otherwise, multicellular life would be filled with an intolerably high number of defects.
I doubt, for example, if Earth would boast any multicellular life without it.
The researchers interpret these fossils as a way of life that tried to evolve into a multicellular life form.
All major groups of animals — an entire kingdom of multicellular life that today includes insects, worms, shellfish, starfish, sea anemones, coral, jellyfish, and vertebrates like us — bloomed suddenly in the fossil record during an evolutionary extravaganza known as the Cambrian explosion, which occurred 530 million years ago.
Geneticist Bonnie Bassler of Princeton University thinks group - living bacteria may give us a window onto the origins of multicellular life.
The study is «another step forward in finding life in places you don't expect it,» says Michael Meyer, an astrobiologist who is the lead scientist for NASA's Mars Exploration Program in Washington, D.C. «The discovery of multicellular organisms in the Hadean subsurface world raises the unthinkable possibility there could be multicellular life on Mars.»