Search results for multicellular organisms:
Immunity in social amoeba suggests ancient beginnings
Biology /
Aug 02, 2007 |
4.9 / 5 (8) |
0
Finding an immune system in the social amoeba (Dictyostelium discoideum) is not only surprising but it also may prove a clue as to what is necessary for an organism to become multicellular, said the Baylor College of Medicine ...
Unicellular microRNA discovery
Biology /
Apr 30, 2007 |
4.7 / 5 (11) |
0
In the May 15th issue of Genes & Development, an international collaboration of researchers, led by Dr. Yijun Qi (National Institute of Biological Sciences, China), report on their discovery of microRNAs in the unicellular green ...
Researchers characterize novel regulator of chromosome function
Biology /
Mar 10, 2008 |
not rated yet |
0
The Stowers Institute's Workman Lab has shed new light on a novel histone acetyltransferase protein complex called ATAC. Acetyltransferases are enzymes that introduce a new acetyl functional group into histone proteins, a ...
How Volvox got its groove
Biology /
Feb 19, 2009 |
4.2 / 5 (5) |
10
Some algae have been hanging together rather than going it alone much longer than previously thought, according to new research.
Signs point to sponges as earliest animal life
Biology /
Feb 04, 2009 |
4.3 / 5 (11) |
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(PhysOrg.com) -- Even Charles Darwin was puzzled by the apparently sudden appearance in the fossil record of a great variety of multicellular creatures — a rapid blossoming known as the Cambrian explosion. ...
Bodily breakdown explained: How cell differentiation patterns suppress somatic evolution
Biology /
Dec 14, 2007 |
3.7 / 5 (3) |
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Natural selection can occur at the cellular level, where it is detrimental to health. Fortunately it is normally controlled by a well-known pattern of ongoing cell differentiation in the mature tissues of animals, according ...
Surprising discovery: Multicellular response is 'all for one'
Biology /
May 08, 2008 |
4.3 / 5 (11) |
1
Real or perceived threats can trigger the well-known “fight or flight response” in humans and other animals. Adrenaline flows, and the stressed individual’s heart pumps faster, the muscles work harder, the brain sharpens ...
Can you hear me now?
Biology /
Jul 07, 2008 |
4.8 / 5 (20) |
2
When it comes to cellular communication networks, a primitive single-celled microbe that answers to the name of Monosiga brevicollis has a leg up on animals composed of billions of cells. It commands a signaling ...
Discovery of giant roaming deep sea protist provides new perspective on animal evolution
Biology /
Nov 20, 2008 |
4.5 / 5 (28) |
3
Groove-like tracks on the ocean floor made by giant deep-sea single-celled organisms could lead to new insights into the evolutionary origin of animals, says biologist Mikhail "Misha" Matz from The University ...
Why don't we get cancer all the time?
Dec 19, 2007 |
4.1 / 5 (17) |
1
The seemingly inefficient way our bodies replace worn-out cells is a defense against cancer, according to new research.
Trichoplax genome sequenced -- 'rosetta stone' for understanding evolution
Biology /
Sep 03, 2008 |
4.9 / 5 (34) |
2
(PhysOrg.com) -- Yale molecular and evolutionary biologists in collaboration with Department of Energy scientists produced the full genome sequence of Trichoplax, one of nature's most primitive multicellular organi ...
Voracious sponges save reef
Biology /
Jan 13, 2009 |
4.8 / 5 (4) |
0
Tropical oceans are known as the deserts of the sea. And yet this unlikely environment is the very place where the rich and fertile coral reef grows. Dutch researcher Jasper de Goeij investigated how caves in the coral reef ...
2 explosive evolutionary events shaped early history of multicellular life
Other Sciences / Archaeology & Fossils
Jan 03, 2008 |
4.4 / 5 (29) |
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Scientists have known for some time that most major groups of complex animals appeared in the fossils record during the Cambrian Explosion, a seemingly rapid evolutionary event that occurred 542 million years ...
Study reveals new data on circadian rhythms
May 07, 2009 |
5 / 5 (1) |
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Fluctuations in light intensity allow restoring the regularity of circadian rhythms. This is the main conclusion of the work carried out by Javier Buceta, group leader of The SiMBioSys Group (Theoretical and In Silico Modelling ...
Dictyostelium cells shown to lay 'breadcrumb trail' as first step in multicellular formation
Biology /
Dec 01, 2008 |
4.5 / 5 (2) |
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When starved of their food source and then presented with a chemoattractant signal like cAMP, individual Dictyostelium cells acquire a polarized morphology and aggregate to form a migrating stream. This is the first step ...
