biological chemistry

Difference between Collagen and Keratin – Comparison Table


Collagen vs Keratin

Collagen vs Keratin
(Similarities and Differences between Collagen and Keratin)

Collagen and Keratin are the main structural proteins. They are two main families of fibrous proteins and are abundantly present in the extracellular matrix and various connective tissues in animals. 

Collagen: A linear structural fibrous protein abundantly found in the connective tissue and extracellular space of the cells. They are also found in tendons, ligaments, cornea, cartilage, bone, blood vessels, intervertebral discs and the dentine in teeth.

Keratin: A structural protein abundantly present in epithelial cells. They protect the epithelial cells from damage or stress. Keratin is also present in appendages such as feathers, hairs and nail, horn, claws and hooves of animals. Keratin is the structural material that makes the human skin.

The present post discusses the similarities and Differences between Collagen and Keratin with a Comparison Table.

Continue reading

Botany lecture notes

Difference between Intercropping and Mixed Cropping: Comparison Table


Intercropping vs Mixed Farming

Mixed Cropping vs Intercropping
(Difference between Mixed Cropping and Intercropping)

Mixed cropping and Intercropping are two methods of diversified farming techniques where more than one types of crops are grown in the same unit area. In mixed cropping or mixed farming, two independent crops are mixed together and grown in an area, whereas the intercropping is a multiple cropping techniques where two or more crops are grown in proximity.  Mixed cropping and intercropping are essentially two separate farming techniques with specific goals. The present post discusses the differences between Mixed cropping and Intercropping with a comparison table.

Continue reading

Difference between GM Counter and Proportional Counter


GM Counter vs Proportional Counter

Proportional Counter vs GM Counter
(Difference between Proportional Counter and GM Counter)

Proportional counter and GM counters are devices to detect and quantify radiations. The proportional counter is able to detect the energy of incident radiation and produce an output proportional to the intensity of the radiation. A GM counter detects ionizing radiation such as alpha particles, beta particles and gamma rays using the ionization effect produced in a Geiger–Müller tube. Both the instruments can quantify the intensity of radiation and have immense application in research, medicine and nuclear industry. The present post discusses the differences between a Proportional counter and a GM counter with a comparison table.

Continue reading

Difference between GM Counter and Scintillation Counter


GM Counter vs Scintillation Counter

GM Counter vs Scintillation Counter
(Similarities and Differences between GM Counter and Scintillation Counter)

Geiger–Müller or GM Counter and Scintillation Counter are two commonly used devices to detect and quantify the radiation. The GM counter can detect all kinds of radiations such as alpha, beta and gamma rays, whereas the scintillation counter can detect only ionizing radiations. There are considerable differences in the working principle and applicability of GM counter and the Scintillation counter. The present post discusses the difference between G.M. Counter and Scintillation counter with a comparison table.

Continue reading

Difference between Gas Solid Chromatography and Gas Liquid Chromatography: Comparison Table


Difference between GSC and GLC

Gas-Solid Chromatography (GSC) vs Gas-Liquid Chromatography (GLC)
(Difference between GSC and GLC Chromatography)

Gas Chromatography or GC is a chromatographic technique used for the separation of volatile compounds. In GC, a mixture of volatile compounds with differential migration passes through a column containing solid or liquid stationary phase. In GC, the mixture to be separated should be in gaseous phase and the mobile phase used will be always in the gaseous state (usually an inert gas such as nitrogen, helium or argon). Based on the states of stationary phases, there are two types of Gas Chromatography techniques: (1) Gas Solid Chromatography (GSC) and (2) Gas Liquid Chromatography (GLC).

(1). Gas Solid Chromatography (GSC): In GSC, the stationary phase is in the solid state (liquid phase is absent). The stationary phase is coated in the interior of the column. Molecules in the stationary phase will interact with the mobile phase through adsorption forces.

(2). Gas Liquid Chromatography (GLC): In GLC, the stationary phase is a nonvolatile liquid. The liquid stationary phase is coated on an inert support in the column. The mobile phase will be an inert gas such as nitrogen, helium or argon.

There are considerable differences in the working principle, mobile and stationary phase and the efficiency of GSC and GLC. The present post discusses the similarities and differences between Gas Solid Chromatography (GSC) and Gas Liquid Chromatography (GLC) with a comparison table.

Similarities between Gas Liquid and Gas Solid Chromatography

Ø  Both are GSC and GLC are Gas chromatographic techniques.

Ø  Both uses gaseous mobile phase (usually an inert gas such as N, He etc.).

Ø  Both are used for the separation of volatile compounds / mixtures.

Ø  Heat labile compounds cannot be separated.

Ø  Both GSC and GLC can be analytic or preparatory.

Ø  Both types of GC use similar type of detectors.

Continue reading