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!
Structural Features of Viruses
Size of Viruses
Virus particles vary widely in size. The smallest viruses e.g. virus of foot and mouth disease measuring about 20 mill microns are about the size of largest protein molecules. The largest viruses measuring about 350 nm are as large as the smallest bacteria (Mycoplasma).
Shape and Symmetry of Viruses
Most plant viruses are rod shaped or filamentous while the animal viruses may be filamentous or roughly spherical filamentous vireos are cylindrical structures with a helical symmetry, The most animal viruses ,the helix is highly coiled into a sub spherical structure .The spherical vireos are polyhedral structured like diamonds with a typical icosahedra symmetry , each having 20 equilateral triangular sides or facets an 12 vertices or corners.
Poxviruses and rabies virus are unique in shape and symmetry. Poxviruses are brick shaped and rabies virus is bullet shaped. These viruses are complex in structure and symmetry.
Viruses of bacteria are also unique in shape and structure. Each vision is a tadpole shaped structure having two main parts a polyhedral headland a spring like or conical tail with a thin collar in between. The free flattened end of the tail bears a large endplate or base plate from which slender hook like legs, called tail fibres and six small pegs or spikes project different directions. Contain bacteriophages lack the endplate, tail fibres and pages.
Bacteriophage Influenza Virus
Herpes Virus Polio virus
Amylopectin Amylopectin forms a branched structure with about 30 glucose units in a chain among branches. There are usually slightly more 'outer' unbranched chains (called A-c
Is it more indicated for a geneticist desiring to map the X chromosome of the mother of a given family (the researcher does not have access to her DNA, only access to the genetic m
Q. What are the few examples of the energetic function of organic molecules? Ans. Since they are complex molecules, organic molecules store large amount of energy, present
Advantages of Autonomous Transactions An autonomous transaction, once started is fully independent. It shares no locks, resources, or commit-dependency with the main transacti
Tectology: This is the study of structural organization of body. Tectology is a term which is used by Alexander Bogdanov to describe a discipline which consisted of unifying all
Doppler echocardiogaphy is based on the Doppler effect, which was described by the Austrian phy$icist Christian Doppler in 1842. The Doppler effect states that sound frequency
difference between protonephridia and metanephridia
Define Tests for the Presence of Exoenzymatic Activity? Microorganisms require various micro- and macro-nutrients for energy production and growth. These are obtained from the
What is the function of vitamin E? In which foods can it be found? Vitamin E, or tocopherol, is a fat-soluble vitamin that participates as coenzyme in the respiratory chain, t
Definition of osmosis A) The best explanation of osmosis is 'The movement of water from a dilute solution to a concentrated solution across a partially permeable membrane'.
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