205 results found

Search Results for: state function


Definition noun, plural: functions (biology) The special, normal, proper physiologic activity of a body part or an... Read More


Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More

A tradeoff between immunocompetence and sexual ornamentation in domestic fowl

A tradeoff between immunocompetence and sexual ornamentation in domestic fowl   S. Verhulst,*† S. J. Dieleman,‡ and H.... Read More

Traumatic Brain Injury may lead to Seizure

Traumatic Brain Injury May Lead to Seizure Traumatic brain injury (TBI), traumatic injuries to the brain, also called... Read More


Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More


Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More

Hydrogen-bond switching through a radical pair mechanism in a flavin-binding photoreceptor

Hydrogen-bond switching through a radical pair mechanism in a flavin-binding photoreceptor Magdalena Gauden,† Ivo H.... Read More

Mathematical models have given physicists a new look at DNA’s chemical counterpart, RNA

The models -- showing that RNA behaves differently depending on the temperature of its environment -- may help biologists... Read More

Mathematical Models Reveal ‘Molten’ And ‘Glassy’ States Of RNA

AUSTIN, Texas -- Mathematical models have given physicists a new look at DNA's chemical counterpart, RNA. The models --... Read More

Reductionism and complexity in molecular biology

  Marc H.V. Van Regenmortel1   1Marc H. V. Van Regenmortel is at the Ecole Supérieure de Biotechnologie de... Read More


Ecosystem Definition An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.... Read More


Definition noun (developmental biology) A cellular process in which a differentiated cell loses its special form or... Read More


Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Statistical Thermodynamics: taking a walk on a landscape

Charles L. Brooks III, José N. Onuchic, David J. Wales C. L. Brooks III is in the Department of Molecular Biology, The... Read More

Flashy Science: Controlling Neural Function with Light

One of the most powerful means for studying the function of proteins, synapses, cells, and networks of cells is to control... Read More


Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Scientists retrace evolution with first atomic structure of an ancient protein

August 17, 2007 -- Scientists have determined for the first time the atomic structure of an ancient protein, revealing in... Read More

Brain Structure Provides Key To Unraveling Function Of Bizarre Dinosaur Crests

October 16, 2008 — Paleontologists have long debated the function of the strange, bony crests on the heads of... Read More

Nonlinear elasticity, proteinquakes, and the energy landscapes of functional transitions in proteins

Abstract Large-scale motions of biomolecules involve linear elastic deformations along low-frequency normal modes, but for... Read More


Definition noun (general) The state or the process of being active and/or effective (biochemistry) The process of making a... Read More

The body’s biological clock: alcohol may lead to physiological anarchy

Circadian rhythms refer to biological phenomena that oscillate within a 24-hour cycle, in keeping with the earth's... Read More

MSU researchers make new discoveries on what does and doesn’t affect immune system

Scientists know that a number of factors can affect the body's immune system: poor diet, certain steroids, chronic stress.... Read More

Community (biology)

Community, in biology, refers to the assemblage of interacting organisms (either of the same or different species)... Read More

Extending knowledge of Escherichia coli metabolism by modeling and experiment

Abstract One of the challenges for 'post-genomic' biology is the integration of data from many different sources. Two... Read More

Mechanical Forces Found To Exert Larger Role In Blood Vessel Health And Disease

University Park, Pa. --- Cholesterol, dietary fat, drugs and other chemical bio-regulators may get most of the media... Read More

Introduction. Bioinformatics: from molecules to systems

Article The post-genome era is characterized by a major expansion in the available biological data. Sources of information... Read More


A cell is a membrane-bound structure that occurs as a functional independent unit of life (such as in unicellular organisms,... Read More


What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

A new wrinkle in evolution — Man-made proteins

Nature, through the trial and error of evolution, has discovered a vast diversity of life from what can only presumed to... Read More


Oxygen Definition In biochemistry, oxygen is the colorless, odorless, gaseous element represented by the symbol "O", with... Read More

Synthetic Molecules Emulate Enzyme Behavior For The First Time

When chemists want to produce a lot of a substance -- such as a newly designed drug -- they often turn to catalysts,... Read More

Brain network linked to contemplation in adults is less complex in children

March 10, 2008 -- A brain network linked to introspective tasks -- such as forming the self-image or understanding the... Read More


Denaturation Definition In biochemistry, denaturation is defined as a process in which a molecular structure deviates from... Read More

Darkness Unveils Vital Metabolic Fuel Switch Between Sugar And Fat

Constant darkness throws a molecular switch in mammals that shifts the body's fuel consumption from glucose to fat and... Read More

Still in the Image of God? The Ethical Challenge of Brain Damaged Persons

COMMENTARY Still in the Image of God? The Ethical Challenge of Brain Damaged Persons by Derrick L. Hassert, Ph.D. James is... Read More

In harshest environments, some proteins protected by ‘alternate’ folding mode

Beset by peers trying to tear them apart, proteins known as proteases constantly risk destruction. UCSF scientists have... Read More

Zooming in on the protein-conducting channel

Researchers have gained the most detailed view yet of the heart of the translocon, a channel through which newly... Read More