Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define Capsule Staining (Anthony Staining Method)?
A rigid, well-organized gelatinous layer called capsule is present outside the cell wall of many bacteria e.g. Streptococus pneumoniae, Clostridium perfringens and Klebsiella pneumoniae. It is mostly made up of polysaccharide (homo or hetero-polysaccharide) though in few it is proteinaceous in nature, e.g., in Bacillus anthracis it consists of poly-D-glutamic acid. The ability to form capsule is genetically determined. Capsule is not required for reproduction or growth of bacteria though it confers several advantages:
1. It protects the bacteria from phagocytosis by host phagocytes, so it contributes to the virulence of bacteria, e.g. Streptococcus pneumoniae.
2. It provides protection against dessication.
3. It helps the bacteria in attachment to host tissues e.g. in Streptococcus mutans capsule helps in attachment to the surface of the teeth and thus causing dental caries.
4. Capsule may be used as a source of nutrition by S. mutans.
5. Viscosity of a capsule may help in inhibiting the movement of nutrients out of the cell.
6. Capsule also exclude bacterial viruses and most hydrophobic toxic materials such as detergents.
In a chemical reaction the free energy change (/\Go') is -40 jk/mol and the entropy factor T/\S is 15 kj/mol. the enthalpy change /\H for the reaction is a. 25 kj/mol b.-25 k
way of remember phylum protozoa
Population Growth - Population Parameters and Regulation The size of a population depends upon the balance between natality and immigration through which individuals are added
Explain about the Qualitative Tests for Carbohydrates? This section will familiarize you with simple techniques and tests to identify carbohydrates in a laboratory. The objecti
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Explain the Root-End Preparation - endodontic surgery a. Class I type preparation, 3mm depth. b. Tips are designed in a length of 3 mm to prevent procedural errors. c. Ul
You have discovered that a single protein in two different cell lines is significantly over expressed in one of them. The proteins are identical, yet Northern blot analysis has dem
Explain Oxygen Therapyin respiratory support? Oxygen is given to correct hypoxemia. An initial high concentration of oxygen (FiO2) is given while the underlying cause is identi
Define Enrichment Media - Culture Media? It contains selective ingredients in the medium, which shifts the growth in a mixed microbial population to a particular group of micro
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd