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Activity cycles

Activity cycles

Bouts of physical irritability or movement alternating with periods of quiescence. It includes biochemical activity and hormonal activity which may be cellular. These cycles are shorter than 24 hours and include sleep-wakefulness cycles and the periodic activation of the digestive system.

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DNase I stability

... in 50% glycerol and in -20C (kept in liquid form to avoid freeze/thaw cycles)? Some supplier stated that their product is guaranteed to have activity > 90% after 6 months, but others simply state that "store in -20C" without ...

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by biohazard
Tue Nov 06, 2012 9:30 am
Forum: Molecular Biology
Topic: DNase I stability
Replies: 1
Views: 1972


... so you end up with a population of RISC that has some guide-directed activity and some star-directed activity. If an even amount of each strand ... have both DNA strands, a complementary DNA duplex, and subsequent PCR cycles prime both of the strands, doubling the number of strands during each ...

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by jonmoulton
Mon Nov 28, 2011 10:54 pm
Forum: Cell Biology
Topic: miRNA:miRNA*?
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Views: 1698

Re: Theories - Origin of Life

... Science's best bet is currently self replicating RNAs with catalytic activity, as those things can be observed Really? Leslie Orgel’s posthumous ... you will find here. It is entitled The Implausibility of Metabolic Cycles on the Prebiotic Earth http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0060018 ...

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by scottie
Fri Aug 26, 2011 10:22 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1129998

cell fusion

... (a) The activation of DNA synthesis may result from the stimulatory activity of one or more cytoplasmic factors. (b) The transition from S to ... chromatin condensation. (d) G1 is not an obligatory phase of al cell cycles. (e) The transition from mitosis to G1 appears to result from the ...

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by jello22
Thu Apr 30, 2009 3:02 pm
Forum: Cell Biology
Topic: cell fusion
Replies: 0
Views: 4357

Anthropogenic global warming?

... at the doubt that warring exist... apart from humans I listen that sun activity is increasing at the last time, and cycles of the climat may be... By the deadline, temperature at the Antarctida is decrease instead ...

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by Locus
Tue May 01, 2007 11:06 am
Forum: Ecology
Topic: Anthropogenic global warming?
Replies: 188
Views: 162661
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