Our internal circadian clock regulates daily life processes and is synchronized by external cues, the so-called Zeitgebers. The main cue is the light-dark cycle, whose strength is largely reduced in extreme habitats such ...
Plants & Animals
Jun 19, 2013
0
0
(Phys.org) —Cellular processes in most organisms are regulated by an internal clock, and proteins called cryptochromes are at the core of its central oscillator. The three dimensional structures of cryptochromes from mouse ...
Cell & Microbiology
Jun 11, 2013
0
0
Circadian rhythms keep time for all living things, from regulating when plants open their flowers to foiling people when they try to beat jet lag. Day-night cycles are controlled through ancient biological mechanisms, evolutionarily ...
Cell & Microbiology
Apr 11, 2013
0
0
Of course, roosters crow with the dawn. But are they simply reacting to the environment, or do they really know what time of day it is? Researchers reporting on March 18 in Current Biology have evidence that puts the clock ...
Plants & Animals
Mar 18, 2013
1
0
Our planet was revolving on its axis, turning night into day every 24 hours, for 4.5Â billion years - long before any form of life existed here. About a billion years later, the very first simple bacterial cells came into ...
Cell & Microbiology
Oct 2, 2012
4
0
Numerous processes in our body fluctuate in a regular pattern during the day. These circadian (or daily) variations can be driven by local oscillators present within our cells or by systemic signals controlled by the master ...
Cell & Microbiology
Aug 23, 2012
0
0
In a study of the molecular underpinnings of plants' pest resistance, Rice University biologists have shown that plants both anticipate daytime raids by hungry insects and make sophisticated preparations to fend them off.
Cell & Microbiology
Feb 13, 2012
4
0
(PhysOrg.com) -- Feeling jet-lagged? You may need your internal clock reset. New Cornell research has taken a major step toward treating jet lag and other more serious syndromes by advancing our understanding of how circadian ...
Cell & Microbiology
Nov 15, 2011
1
0
(PhysOrg.com) -- Research has shown that light is the key to getting our 'body clocks' back in sync and now a new study exploring the resynchronisation mechanism in insects has discovered a molecule essential to the process.
Cell & Microbiology
Jul 13, 2011
0
0
Honey bees removed from their usual roles in the hive quickly and drastically changed their biological rhythms, according to a study in the Sept. 15 issue of The Journal of Neuroscience. The changes were evident in both the ...
Plants & Animals
Sep 14, 2010
0
0
