APAKAH MAKSUD DISPOSABLE SOMA THEORY dalam CORSICA?
Evolusi penuaan
Siasatan ke atas evolusi penuaan bertujuan untuk menjelaskan mengapa hampir semua makhluk hidup melemahkan dan mati dengan usia. Belum lagi persetujuan dalam komuniti saintifik atas satu jawapan. Asal evolusi senescence kekal sebagai masalah yang tidak dapat diselesaikan dalam biologi. Dari segi sejarah, penuaan pertama kali disamakan dengan "haus dan lusuh": badan hidup semakin lemah seperti menggunakan kelebihan pisau yang menjadi kusam atau dengan pendedahan kepada udara dan kelembapan objek besi karat. Tetapi idea ini telah didiskreditkan pada abad ke-19 apabila undang-undang termodinamik kedua telah diformalkan. Entropi mesti meningkat tidak dapat dielakkan dalam sistem tertutup, tetapi makhluk hidup tidak sistem tertutup. Ia merupakan ciri kehidupan yang diperlukan dalam tenaga bebas dari alam sekitar dan memunggah entropinya sebagai sisa. Sistem hidup juga dapat membina diri dari benih, dan secara rutin membaikinya. Tidak ada keperluan termodinamik untuk senescence. Di samping itu, kerosakan generik atau teori "haus dan lusuh" tidak dapat menjelaskan mengapa organisma yang sama secara biologi mempamerkan pelbagai hayat yang berbeza secara dramatik.
Definisi disposable soma theory dalam kamus Corsica
Takrif teori soma boleh guna dalam kamus adalah teori bahawa penuaan disebabkan oleh badan yang mempunyai sumber yang semakin sedikit untuk diperuntukkan ke arah membaiki haus dan merosakkan tisu.
CORSICA BUKU YANG BERKAIT DENGAN «DISPOSABLE SOMA THEORY»
Ketahui penggunaan
disposable soma theory dalam pilihan bibliografi berikut. Buku yang berkait dengan
disposable soma theory dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
Disposable Soma Theory In 1977, a statistician named Thomas Kirkwood (now a
biologist and professor of medicine at the University of Newcastle) published his
disposable soma theory6 of aging. Kirkwood's idea was that organisms only ...
Theodore C. Goldsmith,
2006
2
The Encyclopedia of Aging: Fourth Edition, 2-Volume Set
DISPOSABLE SOMA THEORY Disposable soma theory explains aging by
simultaneously addressing the questions of why aging occurs, as a problem in
evolutionary biology, and how aging is caused, as a problem in physiology (Kirk-
wood, ...
3
Genetic Effects on Aging
ABSTRACT The disposable soma theory suggests that aging occurs because
natural selection favors a strategy in which organisms invest fewer resources in
the maintenance of somatic cells and tissues than are necessary for indefinite ...
This hypothesis, first developed by Thomas Kirkwood, is known as the
disposable soma theory. The disposable soma theory is based on the
evolutionary principle that all environments have finite resources, and organisms
compete for those ...
5
Aging: The Paradox of Life: Why We Age
This was proposed by Tom Kirkwood in 1977, and came to be known as the “
disposable soma” theory of the evolution of ageing. Initially this belonged to the “
wear and tear” category, because it was based on the view that ageing was due
to ...
The accuracy we see in present-day organisms depends on highly specific
enzyme systems, and also various proof-reading devices that would recognise
errors and correct them (see Chapter 3). DNA The disposable soma theory 101
XLII.
7
Encyclopedia of Ecology and Environmental Management
The disposable soma theory is named for its analogy with disposable goods,
which are manufactured with limited investment in durability, on the principle that
they have a short expected duration of use. The theory, as outlined above,
applies ...
8
Insulin Signaling, Dietary Restriction and DNA Damage: ...
The Disposable Soma Theory of Aging As a special mechanistic case of
antagonist pleiotropy, the disposable soma theory of aging assumes that repair
and maintenance of the soma are metabolically costly to the organism and divert
limited ...
Suzanne Christine Wolff,
2008
9
Human Longevity: The Major Determining Factors
Interestingly, Drenos and Kirkwood26 recently described a mathematical model
of the disposable soma theory. The model predicts the optimal strategies for
investments in growth and reproduction and compares it with the investment in ...
Joseph A Knight M D,
2010
10
The Psychology of Ageing: An Introduction
The disposable soma theory takes this argument and adapts it as follows. Body
cells die and have to be replaced constantly. If they are not replaced, then the
body parts concerned decline in number and efliciency. However, it is not
possible ...
Ian Stuart-Hamilton,
2012
BARANGAN BERITA YANG TERMASUK TERMA «DISPOSABLE SOMA THEORY»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
disposable soma theory digunakan dalam konteks perkara berita berikut.
The real reason women outlive men: it's all a matter of breeding
The disposable soma theory states that, although the genes are immortal and can indeed "live forever" by being continually passed on to ... «Independent, Okt 10»