Action

Action & Absorption Spectra
Action Spectra
An action spectrum is the rate of a physiological activity plotted against wavelength of light.
Full article >>>

Action potentials are measured with the recording techniques of electrophysiology and more recently with neurochips containing EOSFETs.
Full article >>>

Olfaction in the animal kingdom
The importance and sensitivity of smell varies among different organisms: most mammals have a good sense of smell, whereas most birds do not. As an exception among birds, olfaction is important in the tubenoses.
Full article >>>

petrifaction
method of fossil formation in which mineral matter takes the place of the original organic or living material during the disintegration of the organism ...
Full article >>>

Polymerase chain reaction (PCR)
A technique for amplifying a specific DNA sequence in-vitro. See also PCR Glossary.
Other Resources ...
Full article >>>

A reaction in which electrons are transferred from a donor (the reducing agent) to an acceptor molecule (the oxidizing agent).
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>

Chapter 11
The 'lipid raft' microdomain proteins reggie-1 and reggie-2 (flotillins) are scaffolds for protein interaction and signalling
Claudia A.O. Stuermer1 and Helmut Plattner
Department of Biology, University of Konstanz, 78467 Konstanz, Germany ...
Full article >>>

Dr. Leslie Biesecker, of the National Human Genome Research Institute's Laboratory of Genetic Disease Research, defines polymerase chain reaction (PCR).
illustrated:
View illustration ...
Full article >>>

A reaction must be capable of being initiated by the application of shock or heat to a small portion of the mass of the explosive material.
Full article >>>

ACTION: Notice of Hearings and Request for Comments.
SUMMARY: The Patent and Trademark Office (PTO) will hold public hearings, and it requests comments, on issues relating to patent protection for nucleic acid sequences.
Full article >>>

Action threshold: The pest density at which a control tactic must be implemented to avoid an economic loss.
Active ingredient (AI): The component of a pesticide formulation responsible for the toxic effect.
Full article >>>

action: potential occurs when a neuron is displaying a nerve impulse.
active site: the portion of an enzyme that interacts with the substrate.
Full article >>>

action potential
A rapid change in the membrane potential of an excitable cell, caused by stimulus-triggered, selective opening and closing of voltage-sensitive gates in sodium and potassium ion channels.
activation energy ...
Full article >>>

action potential A reversal of the electrical potential in the plasma membrane of a neuron that occurs when a nerve cell is stimulated; caused by rapid changes in membrane permeability to sodium and potassium.
Full article >>>

action potential The sequence of electrical changes occurring when a nerve cell membrane is exposed to a stimulus that exceeds its threshold.
Full article >>>

action potential - rapid, transient, self-propagating electrical excitation in the plasma membrane of a cell such as a neuron or muscle cell ...
Full article >>>

The Action Potential
What is a nerve impulse? A nerve impulse, or an action potential, is a series of electrical responses that occur in the cell.
Full article >>>

compaction - event in early cleavage-stage mammalian embryo during which blastomeres become tightly joined, forming gap junctions enabling the exchange of ions and small molecules to pass from one cell to the next.
Full article >>>

Interaction suppressor
A mutation at a second site that restores an interaction that was disrupted by a primary mutation.
Full article >>>

Interaction between allelic or nonallelic genes of the same genotype in the production of particular phenotypic characters.
Related Terms: Allele ...
Full article >>>

The reaction center molecule becomes ionized and it loses its electron to an electron acceptor. This electron will need to be replaced.
Full article >>>

The reaction to the finds was mixed. On the whole the British paleontologists were enthusiastic; the French and American paleontologists tended to be skeptical, some objected quite vociferously.
Full article >>>

: Interaction of genes at the genotypic level. Natural selection acts on the complex product of such interactions rather than on individual locus. The correlated variation and adaptation present in two mutually dependent organisms.
Coalescence ...
Full article >>>

control action guideline. A guideline used to determine if pest control action is needed.
control action threshold. Pest population level at which treatment is necessary to prevent economic loss, also called economic threshold.
Full article >>>

RT/PCR REACTION - A series of reactions which result in RNA being copied into DNA and then amplified. A single primer is used to make single-stranded cDNA copies from an RNA template under direction of reverse transcriptase.
Full article >>>

Hydrolysis. A reaction in which a molecule of water is added at the site of cleavage of a molecule to two products.
I
Immortalizing oncogene. A gene that upon transfection enables a primary cell to grow indefinitely in culture. (See Oncogene.) ...
Full article >>>

Mutualism. An interaction between two species in which both derive some benefit
Mutualistic. Conferring reciprocal benefit to individuals of two different associated species
Nanoplankton. Planktonic organisms that are 2-20 micometers in size.
Full article >>>

Polymerase chain reaction (PCR): A "biological copy machine": a method for making many copies of a specific DNA base sequence.
Polypeptide: A molecule made up of a stri ng of amino acids. A protein is an example of a polypeptide.
Full article >>>

Polymerase chain reaction: A technique for replicating a specific piece of DNA in vitro, even in the presence of excess non-specific DNA.
Full article >>>

To increase the number of copies of a DNA sequence, in vivo by inserting into a cloning vector that replicates within a host cell, or in vitro by polymerase chain reaction (PCR). Anaerobe. An organism that grows in the absence of oxygen. See Aerobe.
Full article >>>

cDNA -- complementary DNA produced from a RNA template by the action of RNA- dependent DNA polymerase.
Full article >>>

PCR (Polymerase Chain Reaction) A repetitive procedure that results in a geometric amplification of a specific DNA sequence.
Full article >>>

Function: refers to action, how something works. In the case of ecosystem functions we look at photosynthesis, nutrient cycling, population control, dispersal mechanisms, temporal patterns of flowering , breeding, dormancy, and so forth.
Full article >>>

Satellite DNA A genomic DNA fraction which has a different density to the main body of genomic DNA and therefore forms a separate band (satellite) during density gradient ultracentrifugation.
Full article >>>

Each enzyme catalyzes a specific chemical reaction. For some enzyme reactions, methods exist that produce a color change at the site of reaction, allowing location of the enzyme.
Full article >>>

DNA is a very large molecule; the image here shows only a tiny fraction of the typical molecule. If an entire molecule of DNA from the virus "bacteriophage lambda" were shown at this scale, the image would be 970 meters high.
Full article >>>

Application of a radio-frequency signal to the transducer generates acoustic waves in the crystal that alter the index of diffraction of the crystal and result in diffraction of certain wavelengths of light.
Full article >>>

Sets of miniaturized chemical reaction areas that may also be used to test DNA fragments, antibodies, or proteins, by using a chip having immobilised target and hybridising them with probed sample.
Full article >>>

Stacks of thylakoids are called grana, where the Light Reaction occurs. The cytoplasm of the chlorplast is called the stroma, and the Light Independant Reaction (carbon fixation) occurs here.
Covered in: ...
Full article >>>

They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein.
Microfilaments' association with the protein myosin is responsible for muscle contraction.
Full article >>>

Agglutination clumping of RBCs due to an antigen-antibody interaction
(agglutin = glued together)
Albumin the main protein in albumen found in egg white
(albumin = the white of an egg) ...
Full article >>>

biology effect rate of reaction ph experiment procedure
380
biology evolution essay ...
Full article >>>

The developmental process in which the fate of a group of cells is determined by interaction with another group of cells. One group (the inducing cells) controls the differentiation of the other group (the induced cells).
Full article >>>


'"/>