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Linear unbranched homoglycan
?? D glucopyranose units
linked by ?? (1 ? 4) glucoside bonds
molecular weight – 500000

Archimedes’ principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force the magnitude of which is equal to the weight of the fluid .

The test is commonly used for reducing sugars but is known to be NOT specific for aldehydes.

An emulsion is a special type of mixture made by combining two liquids that normally don’t mix.
eg: Butter,Egg yolk etc .

The ionization energy is the energy required to remove an electron from its orbital around an atom to a point where it is no longer associated with that atom.
Group 1 of the Periodic Table features metals whose valence electron singly occupies the outermost shell, the valence shell of the given atoms.
Since the nuclear charge is necessarily diminished with respect to the valence shell, the alkali metals display the lowest ionization energies, and these energies (reasonably) decrease down the Group.

Bacterial cell walls are made of peptidoglycan (also called murein), which is made from polysaccharide chains cross-linked by unusual peptides containing D-amino acids. Bacterial cell walls are different from the cell walls of plants and fungi which are made of cellulose and chitin, respectively.

A heterocyst is a differentiated cyanobacterial cell that carries out nitrogen fixation. The heterocysts function as the sites for nitrogen fixation under aerobic conditions. They are formed in response to a lack of fixed nitrogen (NH4 or NO3).

Nitrogen fixation is the process by which nitrogen is taken from its stable gas form (N2) in the air and changes into other nitrogen compounds (such as ammonia, nitrate and nitrogen dioxide) useful for other chemical processes. It is an important part of the nitrogen cycle.

A zygospore is a diploid reproductive stage in the life cycle of many fungi and protists. Zygospores are created by the nuclear fusion of haploid cells.

An akinete is an enveloped, thick-walled, non-motile, dormant cell formed by filamentous, heterocyst-forming cyanobacteria under the order Nostocales and Stigonematales. Akinetes are resistant to cold and desiccation.

Hormogonia are motile filaments of cells formed by some cyanobacteria in the order Nostocales and Stigonematales. They are formed during asexual reproduction in unicellular, filamentous cyanobacteria some contain heterocysts and akinetes.

The katal (symbol: kat) is the unit of catalytic activity in the International System of Units (SI). It is a derived SI unit for quantifying the catalytic activity of enzymes (that is, measuring the enzymatic activity level in enzyme catalysis) and other catalysts.

Bruce Cork was a physicist who discovered the antineutron in 1956 while working at the Lawrence Berkeley National Laboratory. The antineutron is the antiparticle of the neutron with symbol n. It differs from the neutron only in that some of its properties have equal magnitude but opposite sign. It has the same mass as the neutron, and no net electric charge, but has opposite baryon number (+1 for neutron, -1 for the antineutron). This is because the antineutron is composed of antiquarks, while neutrons are composed of quarks. The antineutron consists of one up antiquark and two down antiquarks.

P-N Junction:
A P-N Junction is an interface or boundary between two different kinds of semiconductor material.
The less abundant charge carriers are called minority carriers; in n-type semiconductors they are holes, while in p-type semiconductors they are electrons.
In an intrinsic semiconductor, which does not contain any impurity, the concentrations of both types of carriers are ideally equal.

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