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.
What is Smooth Muscle? Smooth muscle provides the contractile force for movement in internal organs under control of the involuntary or autonomic nervous system. Smooth muscle
Q. What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods? The metameric feature that is the body segmentatio
What is monera? One of the 5 main kingdoms contains bacteria and blue/green algae. Does NOT have a cell membrane, or in other words, is made of prokaryotic cells. Actually,
Gametophytic Incompatibility In GSI systems callose deposition is not evident on the stigma but is very conspicuous in the pollen tube. Sometimes the callose deposition occurs
CELL MEMBRANE It is biological, thin, elastic, flexible & selective permeable membrane. Term "Cell membrane" was coined by Negeli & Crammer 1855. Term " Plasma membr
Q. In the metagenesis of Obelia and Aurelia what is the form that produces gametes? What is the form that reproduces asexually? In the metagenesis of some coelenterates, like O
Where are the adrenal glands located? How many are they and what are their portions? Each adrenal gland is located on the top of every kidney (forming a hat-like structure for
How calcium prevents luxury consumption of potassium Increasing Ca:K ratio in soil solution depresses the uptake of potassium. Thus one of the harmful effects of over liming m
MEDICA L SCIENCE IN ANCIENT INDIA Dhanvantri -"God of Medicine". Ashvini Kumar - Famous medical man of vedic times. Susruta - First Indian to study human anatomy;
Reduction of NADP+ occurs during what?
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