Action & Absorption Spectra
Action Spectra
An action spectrum is the rate of a physiological activity plotted against wavelength of light.
Action (philosophy), something a person can do. Action (music), a ... Action (piano), the mechanism which drops the hammer on the string when a key is ...
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Action potential
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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 ...
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 ...
subtraction
1. The act or operation of subtracting or taking away a part.
DNA Extraction from Wheat
Materials:
200 ml beaker 100 ml tap water
1.5 g RAW wheat germ
thermometer balance
water bath at 50-60 degrees Celsius
plastic spoon
glass rod-bent or inoculating loop ...
Polymerase chain reaction (PCR) is a laboratory technique used to amplify DNA sequences. The method involves using short DNA sequences called primers to select the portion of the genome to be amplified.
Polymerase chain reaction (PCR)
A technique for amplifying a specific DNA sequence in-vitro. See also PCR Glossary.
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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 ...
Actions."The Sacrospinalis and its upward continuations and the Spinales serve to maintain the vertebral column in the erect posture; ...
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.
action threshold - pest density of an increasing infestation used to initiate control measures; ...
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 ...
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.
Actionbioscience.org -- This Web site provides peer-reviewed articles and links about six bioscience challenges: biodiversity, environment, genomics, biotechnology, evolution, and new frontiers.
Action potential The increase in membrane potential and the changes in sodium and potassium conductances that result from alterations in the permeability of the axon membrane to those ions. Also called nerve impulse.
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.
Interaction suppressor
A mutation at a second site that restores an interaction that was disrupted by a primary mutation.
petrifaction Mode of fossilization where f organic matter is replaced with silica.
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.
action potential The sequence of electrical changes occurring when a nerve cell membrane is exposed to a stimulus that exceeds its threshold.
action potential - rapid, transient, self-propagating electrical excitation in the plasma membrane of a cell such as a neuron or muscle cell ...
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.
Interaction of a protein with a nucleic acid
The Biology Project
Department of Biochemistry and Molecular Biophysics
The University of Arizona
Revised: January 30, 2003
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The reaction center molecule becomes ionized and it loses its electron to an electron acceptor. This electron will need to be replaced.
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.
- The fraction of the genetic variance that is due to additive genes
Adenine (A)
- Nitrogenous base found in DNA and RNA ...
The interaction between populations in which one organism (the predator) consumes another (the prey).
The interaction of charged particles, electrons and protons, through uncharged particles, expressly through photons, determines the positions and momentums of the energy during the performance of the Proton Motive Force.
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.
Gene interaction
Interaction between allelic or nonallelic genes of the same genotype in the production of particular phenotypic characters.
Related Terms:
Allele ...
Lysosome Action
Since lysosomes are little digestion machines, they go to work when the cell absorbs or eats some food. Once the material is inside the cell, the lysosomes attach and release their enzymes.
Epistatic interaction: In genetic epidemiology, an epistatic effect is the modification of the risk conferred by one marker by the presence of a marker from an unrelated gene (unlinked gene-gene interaction).
Order
In classifiaction a group of organisms closely allied, ranking between family and class.
Related Terms:
Family
A category in the biological classification of plants and animals coming below an order and above a genus.
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.
RAPIC Remedial Action Program Information Center
RASD Reference and Adult Services Division
RECON Research Connection ...
Polymerase chain reaction (PCR): A method for amplifying a DNA base sequence using a heat- stable polymerase and two 20- base primers, ...
Hydrolysis. A reaction in which a molecule of water is added at the site of cleavage of a molecule to two products.
I ...
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.
cDNA -- complementary DNA produced from a RNA template by the action of RNA- dependent DNA polymerase.
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.
PCR See polymerase chain reaction.
Penetrance An "ll or none" reference to clinical expression of a mutant gene.
Phage A virus for which the natural host is a bacterial cell.
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.
PCR See Polymerase chain reaction (PCR)
PFGE See Pulsed-Field Gel Electrophoresis (PFGE)
Phenotype
Phosphatase
Polyacrylamide Gel Electrophoresis (PAGE)
Polymerase Chain Reaction (PCR)
Polymerase chain reaction (PCR)
Polymorphism ...
Rhogam is prepared from the gamma globulin fraction of blood of Rh- people who have been exposed to the Rh+ antigen and who have made antibodies to it. The Rhogam acts as a passive immunization.
The contractile ring that produces cell cleavage is composed of an organized cytoskeletal network that includes actin and bipolar myosin-II filaments working together in a sliding action that mimics muscle contraction.
Reorientation and fusion of cytotoxic T lymphocyte granules after interaction with target cells as determined by high resolution cinemicrography. J. Immunology 136:377-382, 1986.
Sullivan, J.A. Computer-enhanced video microscopy.
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.
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.
Polymerase chain reaction (PCR) A technique by which a relatively small piece of DNA of known sequence can be amplified (often from a complex mixture) by successive cycles of strand separation followed by DNA synthesis (using a DNA polymerase ...
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.
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 BIOL1020 Lab 5 Cellular Energetics II ...
A protein that encourages a biochemical reaction, usually speeding it up. Organisms could not function if they didn't have enzymes. [Talking Glossary]
Ethical issues
Questions that concern what is moral or right.
When a message is transferred through a neuron it passes to the next neuron via an amazing fast chemical and electrical reaction. Because of its lightning speed, it is often said that a person’s synapses are firing when they are in deep thought.
Digestion efficiency: The fraction of living food that does not survive passage through a predator's gut.
Dinoflagellate: Dominant planktonic algal form, occurring as a single cell, often biflagellate.
Phytoextraction is a technique whereby plants are used to bioaccumulate non-degradable materials, typically metals, which are thus removed from soil, and then removed from the environment during harvesting.
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) ...
Enzyme A protein that speeds up a specific chemical reaction without being permanently altered or consumed.
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).
 See also: Trans, Organ, Human, Cells, Protein
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