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Phase in Biological Definition

Affinity chromatography

... with the ability to design a stationary phase that reversibly binds to a known subset of ... becoming trapped on a solid or stationary phase or medium. The non-target heterogeneous mixture ... Batch verses column Binding to the solid phase may be achieved by column chromatography, whereby ...

Chromatography

... , through the "stationary phase." The stationary phase retards the passage of the components of the ... liquid chromatography (HPLC) 8.1 Reversed phase (RP) liquid chromatography 9 Gel ... in partitioning behavior between a mobile phase and a ...

Pentose phosphate pathway

... showTocToggle("show","hide") 1 Oxidative phase 2 Synthesis of sugar 3 Non-oxidative phase 4 See also Oxidative phase In this phase, two molecules of NADPH + are ...

Genetic code

... 4.1 Stop Codons 4.2 Degeneracy of the genetic code 4.3 phase or reading frame of a sequence 5 Origin of the genetic code 6 ... the other is tryptophan , specified by the codon UGG. phase or reading frame of a sequence Note that a "codon" is entirely defined ...

Gastrula

... The gastrula phase of embryonic development is seen in all animals except the sponges . It follows the blastula phase. The gastrula phase is marked by a dramatic restructuring called gastrulation . After ...

Genetic code

... 4.1 Stop Codons 4.2 Degeneracy of the genetic code 4.3 phase or reading frame of a sequence 5 Origin of the genetic code 6 ... the other is tryptophan , specified by the codon UGG. phase or reading frame of a sequence Note that a "codon" is entirely defined ...

Interphase

... Interphase is a phase of the cell cycle , defined only by the absence of cell division . ... 1 in which the cell creates organelles and begins metabolism), S phase ( DNA synthesis in which the chromosomes of the cell are copied) and G ...

Meiosis

... Duplication of chromosomes precedes the process of meiosis (during S phase ). Most animals and plants are normally diploid, and use meiosis to ... homologous chromosomes, 1% of DNA that wasn't replicated during the S phase replicates. Pachytene : starts right after the synaptonemal complex is ...

Magnetic resonance imaging

... Current density imaging is a subbranch of MRI that endeavors to use the phase information from the MRI images to reconstruct current densities within a ... electrical currents generate magnetic fields, which in turn affect the phase of the magnetic dipoles during an imaging sequence. To date no successful ...

X-ray crystallography

... of experimental and computational methods are typically used to solve the phase problem , in order to estimate phases and obtain an initial map of the ... model Patterson function reciprocal space space group phase problem Bragg's law Paper Resources/Books Drenth J. ...

Chromatid

... cells, there are 23 pairs of chromosomes, thus 46 chromosomes. When it is ready to divide, each chromosome will replicate itself during the Synthesis phase within its life cycle. Chromosomes that have replicated stay together, held by the previously mentioned centromere. Because one chromosome became ...

Chromosome

... , see Chromosome (genetic algorithm) . Figure 1: Chromosome. (1) Chromatid . One of the two identical parts of the chromosome after S phase . (2) Centromere . The point where the two chromatids touch, and where the microtubules attach. (3) Short arm. (4) Long arm. A chromosome (in ...

Diffusion

... down the gradient -- i.e. things move from regions of high concentration to low concentration. However, this is not always the case: during a phase separation, material can diffuse towards regions of higher concentration. This is referred to as reverse diffusion. Thermal diffusion When ...

Ethyl alcohol

... Chemical formula C 2 H 5 OH Molecular weight 46.069 amu CAS number 64-17-5 UN number 1170 phase behavior Melting point 158.8 K (-114.3 C , -173.83 F ) Boiling point 351.5 K (78.4C, 173.03F) Triple point ...

Photosynthesis

... in photosynthesis came from the water. Melvin Calvin and his partner Benson were able to puzzle out each stage in the dark or light-independent phase of photosynthesis, known as the Calvin Cycle. A Noble Prize winning scientist, Rudolf Marcus , was able to discover the function and significance ...

Hormone

... activation or inhibition of the immune system , regulating metabolism and preparation for a new activity (e.g. fighting, fleeing, mating) or phase of life (e.g. puberty, caring for offspring, menopause). In many cases, one hormone may regulate the production and release of other hormones. Many ...

Immune system

... proteins may be activated if a pathogen pass through the barrier offered by skin. There are several class of antimicrobial proteins, such as acute phase proteins ( C-reactive protein , for example, binds to the C-protein of S. pneumoniae - enhances phagocytosis and activates complement), ...

Lipid

... separate out from the polar liquid, the entropy (state of disorder) of the polar molecules in the liquid increases. This is essentially a form of phase separation, similar to the spontaneous separation of oil and water into two separate phases when one puts them together. Figure 2: ...

Microscope

... See also microscopy Atom probe Atomic force microscope Electron microscope Field ion microscope Field emission microscope phase contrast microscope , see Frits Zernike Scanning tunneling microscope Virtual microscope X-ray microscope Total internal reflection ...

Photosynthesis

... in photosynthesis came from the water. Melvin Calvin and his partner Benson were able to puzzle out each stage in the dark or light-independent phase of photosynthesis, known as the Calvin Cycle. A Noble Prize winning scientist, Rudolf Marcus , was able to discover the function and significance ...

Proteomics

... resonance are used to characterize the three-dimensional structure of peptides and proteins . Tandem mass spectrometry combined with reverse phase chromatography or 2-D electrophoresis is used to identify and quantify all the levels of proteins found in cells. Affinity chromatography , ...

Recombination

... formation of sperm and egg cells (especially in areas of study of biology topics ). It is also referred to as crossing over (or change of phase ). Other possible implication of the term are as follows: In biology , the process of Genetic recombination and meiosis , as summarized ...
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